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Rewrite and verify every named product: corrected Retro Chip Tester (standalone 8Bit-Museum instrument, not a TL866 add-on) with its real capabilities; corrected ESD mat/strap earthing to require a current-limiting resistor per ANSI/ESD S1.1 (a direct bond to mains earth is dangerous); removed insulated gloves as CRT protection in favour of goggles and the correct discharge tooling; replaced the unsourced 20-50 MHz scope rule with edge-speed reasoning; added sourced solder melting points (Kes... |
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| | {{CategoryHeaderBox | ||
| title = Recommended Tools for Repairing Vintage Electronics | |||
| subtitle = Equipment for retro technology repair and maintenance | |||
| | }} | ||
Ā | |||
This page lists tools that are in common use for vintage computer and console repair, and ā where a specification matters ā says where the figure comes from. Named products are examples that exist and can be bought, not endorsements; equivalents from other makers do the same job. | |||
Nothing here is a shopping list to complete before starting. A temperature-controlled iron, a multimeter, a decent screwdriver set and isopropyl alcohol will carry you through most of the repairs documented on this wiki. The rest is bought when a job needs it. | |||
== Core | == Core hand tools == | ||
{| class="wikitable" style="width:100%;" | {| class="wikitable styled-table" style="width:100%;" | ||
|- | |- | ||
! Tool !! | ! Tool !! What it is for !! Notes | ||
|- | |- | ||
| Precision | | '''Precision screwdriver set''' || Phillips, slotted, Torx and Torx Security || Vintage Apple equipment in particular needs long-reach Torx ā a compact Mac needs a T15 on a shaft of at least 150 mm to reach the case screws in the handle recess. Examples: iFixit Mako Driver Kit, Wiha precision sets | ||
|- | |- | ||
| Needle- | | '''Needle-nose pliers''' || Gripping, bending and placing components || ESD-safe handles if you can | ||
|- | |- | ||
| Flush | | '''Flush cutters''' || Trimming leads after soldering || Example: Hakko CHP-170 | ||
|- | |- | ||
| Spudgers | | '''Spudgers and nylon pry tools''' || Opening cases without marking or cracking the plastic || A metal blade will mark 40-year-old ABS permanently | ||
|- | |- | ||
| | | '''IC extractor / chip puller''' || Lifting socketed DIP devices evenly || Levering one end out with a screwdriver bends the pins on the other end. Essential on socketed 1980s machines | ||
|- | |||
| '''Nut drivers''' || Hex standoffs and jack screws || 3/16 in and 5 mm cover most of what turns up | |||
|} | |} | ||
== Soldering and | == Soldering and desoldering == | ||
{| class="wikitable" style="width:100%;" | {| class="wikitable styled-table" style="width:100%;" | ||
|- | |- | ||
! Tool !! | ! Tool !! What it is for !! Notes | ||
|- | |- | ||
| | | '''Temperature-controlled soldering iron''' || Everything || Temperature control matters more than wattage on old boards: the adhesive holding the copper to the laminate is what fails when the joint is held too hot for too long. Examples: Hakko FX-888D, Weller WE1010, Pinecil, Miniware TS100 | ||
|- | |- | ||
| | | '''A range of tips''' || Matching the tip to the joint || A larger chisel tip transfers heat faster and therefore lets you work at a lower temperature and get off the joint sooner. A fine conical tip is for fine pitch, not for ground planes | ||
|- | |- | ||
| | | '''Leaded solder, Sn63Pb37 or Sn60Pb40''' || Vintage work || Sn63Pb37 is '''eutectic''' ā it melts and freezes at a single temperature, 183 °C, with no plastic range. Sn60Pb40 melts at 183ā190 °C. Lead-free SAC305 (Sn96.5Ag3Cu0.5) melts at 217ā220 °C<ref name="kester">''Alloy Temperature Chart'', Kester (ITW). Melting ranges cited: Sn63Pb37 183 °C (eutectic, single point); Sn60Pb40 183ā190 °C; Sn96.5Ag3Cu0.5 (SAC305) 217ā220 °C; Sn99.3Cu0.7 227 °C.</ref> ā some 35 °C hotter, on laminate and pads that are already four decades old. Use leaded solder on vintage equipment, and observe the usual handling precautions | ||
|- | |- | ||
| Flux || | | '''Flux''' || Wetting and removing oxide || No-clean gel and a flux pen cover most work. Clean it off afterwards regardless of what "no-clean" implies | ||
|- | |- | ||
| Desoldering | | '''Desoldering pump''' || Single joints, through-hole || Examples: Engineer SS-02, or a conventional spring plunger | ||
|- | |- | ||
| Desoldering | | '''Desoldering braid''' || Clearing pads and removing surface-mount parts || Use fresh braid with flux; old oxidised braid does not wick | ||
|- | |- | ||
| Hot | | '''Desoldering gun or vacuum station''' || Multi-pin through-hole work || The single biggest quality-of-life improvement for socketing ROMs or removing a 40-pin device. Examples: Hakko FR-301, ZD-915 class stations | ||
|- | |||
| '''Hot-air rework station''' || Surface-mount removal || Examples: Quick 861DW, Yihua 858D and similar. Essential for lifting surface-mount electrolytics without tearing pads ā see [[Capacitor Failure Symptoms]] | |||
|} | |} | ||
== | == Measurement and diagnosis == | ||
{| class="wikitable" style="width:100%;" | {| class="wikitable styled-table" style="width:100%;" | ||
|- | |||
! Tool !! What it is for !! Notes | |||
|- | |||
| '''Digital multimeter''' || Rails, continuity, resistance, diode checks || The one tool you cannot work without. Continuity buzzer and a diode range are the features that matter | |||
|- | |||
| '''Oscilloscope''' || Clocks, resets, data lines, rail ripple || Choose bandwidth by the '''edge speed''' you need to see, not by the machine's clock frequency: a 1 MHz 6502 machine drives TTL edges of a few nanoseconds, so a 1 MHz scope tells you nothing useful about signal integrity. In practice a 100 MHz two-channel instrument is the common choice, and 20 MHz is enough only for rail ripple and slow control signals | |||
|- | |- | ||
| '''Logic probe''' || Is this pin high, low, floating or pulsing? || Cheap, immediate, and answers most digital questions faster than a scope | |||
|- | |- | ||
| | | '''ESR meter''' || Electrolytic capacitor health, usually in circuit || Compare against a datasheet figure or a known-good identical part; an absolute reading alone means little. Examples: MESR-100, DER EE DE-5000 LCR meter | ||
|- | |- | ||
| | | '''Bench power supply with current limit''' || Powering a board without the original supply; finding shorts || Current limiting turns "it went bang" into "it drew 2 A and stopped". Also the correct way to perform Nichicon's capacitor voltage treatment ā see [[Capacitor Failure Symptoms]] | ||
|- | |- | ||
| | | '''Thermal camera or IR thermometer''' || Finding the shorted part on a dead board || A phone-attachment thermal camera finds a shorted tantalum in seconds | ||
|- | |- | ||
| | | '''EPROM / GAL programmer''' || Reading and writing ROMs and programmable logic || Examples: XGecu TL866II Plus and TL866-3G, GQ-4X. Note that '''very old EPROMs (2708, 2716, 2532, 2732) need programming voltages that modern programmers no longer supply''' | ||
|- | |- | ||
| | | '''Retro Chip Tester Professional''' || Testing RAM, ROM and logic ICs out of circuit || A '''standalone''' instrument from 8Bit-Museum.de ā '''not''' an accessory for a TL866, which is how it is often mis-described. It tests over 50 SRAM types and over 25 DRAM types, checks over 900 logic ICs, reads and identifies ROMs, PROMs and EPROMs against a database of some 400,000 entries, and with adapters dumps C64, VIC-20, Atari VCS and MSX cartridges. It is not a programmer, though with adapters it can program the handful of early EPROMs listed above<ref name="rct">''Retro Chip Tester Professional ā User Manual'', 8Bit-Museum.de (Stephan Slabihoud). Cited for the device being a standalone tester rather than a programmer or a TL866 accessory, and for its stated coverage: over 50 SRAM types, over 25 DRAM types, over 900 logic ICs, ROM/PROM/EPROM reading and identification against a database of approximately 400,000 entries, cartridge dumping adapters for C64, VC20, Atari VCS and MSX, and programming support for the 2708, 2716, TMS2716, 2532, 2732 and 2564 EPROMs only.</ref> | ||
|} | |} | ||
== Static | == Static protection and safety equipment == | ||
{| class="wikitable" style="width:100%;" | {| class="wikitable styled-table" style="width:100%;" | ||
|- | |||
! Item !! What it is for !! Notes | |||
|- | |- | ||
| '''Anti-static wrist strap''' || Protecting CMOS devices when handling boards || '''The earth lead must contain a current-limiting resistor ā never bond yourself directly to mains earth.''' ANSI/ESD S1.1 requires enough resistance to hold the current below 0.5 mA at the highest voltage likely to be met; about 800 kĪ© suffices up to 240 V AC, and 1 MĪ© is specified because it is a standard resistor value<ref name="esd">ANSI/ESD S1.1, ''Wrist Straps'', ESD Association. Cited for the requirement that a wrist strap incorporate resistance sufficient to limit current to less than 0.5 mA at the highest voltage that may be encountered; that nominally 800 kĪ© is sufficient for voltages up to 240 V AC; and that 1 MĪ© is the specified nominal value because it is a standard discrete resistor value. Discrete current-limiting resistors are normally placed at the cuff end of the cord.</ref> | |||
|- | |- | ||
| | | '''ESD mat and earth cord''' || A static-safe bench surface || Same rule: the mat's earth cord goes to earth '''through''' a current-limiting resistor<ref name="esd" /> | ||
|- | |- | ||
| | | '''Safety goggles''' || CRT work, spring-loaded mechanisms, desoldering splatter || Required for CRT work because of the implosion hazard, not the electrical one. See [[CRT Discharge Procedure]] | ||
|- | |- | ||
| | | '''CRT discharge tool''' || Discharging a picture tube || An insulated probe with a series resistor and a flying earth lead. A screwdriver clipped to an earth wire is a dead short and is '''not''' equivalent. '''Never wear a wrist strap or work on an earthed mat while discharging a CRT''' ā full procedure and sources at [[CRT Discharge Procedure]] | ||
|- | |- | ||
| | | '''Nitrile gloves''' || Handling battery and capacitor residue, and peroxide || Not an electrical safety measure. See [[Battery Explosion, Capacitor or Corrosion Damage]] and [[Retrobrite]] | ||
|- | |||
| '''Isolation transformer''' || Working on live equipment with a hot chassis || Relevant to some televisions and monitors with a mains-referenced chassis. It does not make the chassis safe to touch; it removes the earth-referenced shock path | |||
|- | |||
| '''Fume extraction''' || Soldering || Rosin flux fume is a respiratory sensitiser. A fan pulling fume away from your face is the minimum | |||
|} | |} | ||
== Cleaning | == Cleaning and consumables == | ||
{| class="wikitable" style="width:100%;" | {| class="wikitable styled-table" style="width:100%;" | ||
|- | |- | ||
! Item !! | ! Item !! What it is for !! Notes | ||
|- | |- | ||
| Isopropyl | | '''Isopropyl alcohol, 99 % or better''' || Flux removal, general PCB cleaning || Lower-strength "rubbing alcohol" contains water and additives that leave a residue | ||
|- | |- | ||
| | | '''Washing-up liquid and warm water''' || Battery and capacitor residue, and dirty cases || The correct first treatment for capacitor electrolyte on skin and on boards ā see [[Capacitor Failure Symptoms]]. Boards must be dried thoroughly afterwards | ||
|- | |- | ||
| | | '''Contact cleaner''' || Oxidised edge connectors, switches and potentiometers || Use a product intended for electronics; DeoxIT D5 is the usual example. Apply sparingly and to the contact, not the plastic | ||
|- | |- | ||
| | | '''Compressed air or a blower''' || Dust || Canned air held at an angle can discharge liquid propellant onto the board. A bulb blower or a compressor with a moisture trap is better | ||
|- | |- | ||
| Anti- | | '''Lint-free swabs and cloths''' || Precision cleaning || Cotton buds shed fibres into mechanisms. '''Do not use them on floppy drive heads''' ā see [[Floppy Drive Repair]] | ||
|- | |||
| '''Anti-static brushes''' || Dry dust removal from boards || Nylon or goat hair | |||
|- | |||
| '''Kapton tape''' || Masking during hot-air work, insulating repairs || Survives soldering temperatures; ordinary tape does not | |||
|} | |} | ||
== | == Specialist tools for vintage systems == | ||
{| class="wikitable" style="width:100%;" | {| class="wikitable styled-table" style="width:100%;" | ||
|- | |- | ||
! Tool !! | ! Tool !! What it is for !! Typical systems | ||
|- | |- | ||
| | | '''Mass storage emulators''' || Replacing failed or missing drives || BlueSCSI and SCSI2SD for SCSI machines (classic Mac, Amiga, Sun, SGI); Gotek and equivalents for floppy interfaces; IDE-to-CF and IDE-to-SD adapters for later machines | ||
|- | |- | ||
| | | '''Floppy imaging hardware''' || Reading and writing original media, including copy-protected disks || Greaseweazle and Kryoflux read flux transitions rather than decoded data. Also the practical way to test a repaired drive against known-good images ā see [[Floppy Drive Repair]] | ||
|- | |- | ||
| | | '''Floppy alignment diskette''' || Radial track alignment || A '''certified''' alignment diskette and an oscilloscope. Tandon's service manual specifies the Dysan 224/2A for its 48 TPI drives ā see [[Tandon TM100-2]]. Alignment cannot be done properly without one | ||
|- | |- | ||
| | | '''ROM SIMM programmer''' || Writing replacement ROM SIMMs || Macs with a ROM SIMM socket (SE/30 and the Mac II family, and the Quadras with the later 68-pin socket). Doug Brown's open-source programmer is the usual one | ||
|- | |||
| '''Logic analyser''' || Bus-level faults || For address and data bus problems a logic probe cannot resolve. Low-cost USB units are sufficient for 1 MHz to 16 MHz machines | |||
|- | |||
| '''Diagnostic ROMs and test harnesses''' || Bringing up a dead board || Machine-specific. For compact Macintoshes see [[Sad Mac Error Codes]] and [[Diagnostic Serial Console]] | |||
|} | |} | ||
* | == Related pages == | ||
Ā | |||
* [[CRT Discharge Procedure]] | |||
* [[Capacitor Failure Symptoms]] | |||
* [[Battery Explosion, Capacitor or Corrosion Damage]] | |||
* [[Floppy Drive Repair]] | |||
* [[Hard Drive Maintenance and Repair]] | |||
Ā | |||
== References == | |||
<references /> | |||
[[Category:Maintenance Guides]] | [[Category:Maintenance Guides]] | ||
[[Category:Repair Guides]] | [[Category:Repair Guides]] | ||
Revision as of 02:11, 23 September 2026
| Recommended Tools for Repairing Vintage Electronics |
|---|
| Equipment for retro technology repair and maintenance |
This page lists tools that are in common use for vintage computer and console repair, and ā where a specification matters ā says where the figure comes from. Named products are examples that exist and can be bought, not endorsements; equivalents from other makers do the same job.
Nothing here is a shopping list to complete before starting. A temperature-controlled iron, a multimeter, a decent screwdriver set and isopropyl alcohol will carry you through most of the repairs documented on this wiki. The rest is bought when a job needs it.
Core hand tools
| Tool | What it is for | Notes |
|---|---|---|
| Precision screwdriver set | Phillips, slotted, Torx and Torx Security | Vintage Apple equipment in particular needs long-reach Torx ā a compact Mac needs a T15 on a shaft of at least 150 mm to reach the case screws in the handle recess. Examples: iFixit Mako Driver Kit, Wiha precision sets |
| Needle-nose pliers | Gripping, bending and placing components | ESD-safe handles if you can |
| Flush cutters | Trimming leads after soldering | Example: Hakko CHP-170 |
| Spudgers and nylon pry tools | Opening cases without marking or cracking the plastic | A metal blade will mark 40-year-old ABS permanently |
| IC extractor / chip puller | Lifting socketed DIP devices evenly | Levering one end out with a screwdriver bends the pins on the other end. Essential on socketed 1980s machines |
| Nut drivers | Hex standoffs and jack screws | 3/16 in and 5 mm cover most of what turns up |
Soldering and desoldering
| Tool | What it is for | Notes |
|---|---|---|
| Temperature-controlled soldering iron | Everything | Temperature control matters more than wattage on old boards: the adhesive holding the copper to the laminate is what fails when the joint is held too hot for too long. Examples: Hakko FX-888D, Weller WE1010, Pinecil, Miniware TS100 |
| A range of tips | Matching the tip to the joint | A larger chisel tip transfers heat faster and therefore lets you work at a lower temperature and get off the joint sooner. A fine conical tip is for fine pitch, not for ground planes |
| Leaded solder, Sn63Pb37 or Sn60Pb40 | Vintage work | Sn63Pb37 is eutectic ā it melts and freezes at a single temperature, 183 °C, with no plastic range. Sn60Pb40 melts at 183ā190 °C. Lead-free SAC305 (Sn96.5Ag3Cu0.5) melts at 217ā220 °C[1] ā some 35 °C hotter, on laminate and pads that are already four decades old. Use leaded solder on vintage equipment, and observe the usual handling precautions |
| Flux | Wetting and removing oxide | No-clean gel and a flux pen cover most work. Clean it off afterwards regardless of what "no-clean" implies |
| Desoldering pump | Single joints, through-hole | Examples: Engineer SS-02, or a conventional spring plunger |
| Desoldering braid | Clearing pads and removing surface-mount parts | Use fresh braid with flux; old oxidised braid does not wick |
| Desoldering gun or vacuum station | Multi-pin through-hole work | The single biggest quality-of-life improvement for socketing ROMs or removing a 40-pin device. Examples: Hakko FR-301, ZD-915 class stations |
| Hot-air rework station | Surface-mount removal | Examples: Quick 861DW, Yihua 858D and similar. Essential for lifting surface-mount electrolytics without tearing pads ā see Capacitor Failure Symptoms |
Measurement and diagnosis
| Tool | What it is for | Notes |
|---|---|---|
| Digital multimeter | Rails, continuity, resistance, diode checks | The one tool you cannot work without. Continuity buzzer and a diode range are the features that matter |
| Oscilloscope | Clocks, resets, data lines, rail ripple | Choose bandwidth by the edge speed you need to see, not by the machine's clock frequency: a 1 MHz 6502 machine drives TTL edges of a few nanoseconds, so a 1 MHz scope tells you nothing useful about signal integrity. In practice a 100 MHz two-channel instrument is the common choice, and 20 MHz is enough only for rail ripple and slow control signals |
| Logic probe | Is this pin high, low, floating or pulsing? | Cheap, immediate, and answers most digital questions faster than a scope |
| ESR meter | Electrolytic capacitor health, usually in circuit | Compare against a datasheet figure or a known-good identical part; an absolute reading alone means little. Examples: MESR-100, DER EE DE-5000 LCR meter |
| Bench power supply with current limit | Powering a board without the original supply; finding shorts | Current limiting turns "it went bang" into "it drew 2 A and stopped". Also the correct way to perform Nichicon's capacitor voltage treatment ā see Capacitor Failure Symptoms |
| Thermal camera or IR thermometer | Finding the shorted part on a dead board | A phone-attachment thermal camera finds a shorted tantalum in seconds |
| EPROM / GAL programmer | Reading and writing ROMs and programmable logic | Examples: XGecu TL866II Plus and TL866-3G, GQ-4X. Note that very old EPROMs (2708, 2716, 2532, 2732) need programming voltages that modern programmers no longer supply |
| Retro Chip Tester Professional | Testing RAM, ROM and logic ICs out of circuit | A standalone instrument from 8Bit-Museum.de ā not an accessory for a TL866, which is how it is often mis-described. It tests over 50 SRAM types and over 25 DRAM types, checks over 900 logic ICs, reads and identifies ROMs, PROMs and EPROMs against a database of some 400,000 entries, and with adapters dumps C64, VIC-20, Atari VCS and MSX cartridges. It is not a programmer, though with adapters it can program the handful of early EPROMs listed above[2] |
Static protection and safety equipment
| Item | What it is for | Notes |
|---|---|---|
| Anti-static wrist strap | Protecting CMOS devices when handling boards | The earth lead must contain a current-limiting resistor ā never bond yourself directly to mains earth. ANSI/ESD S1.1 requires enough resistance to hold the current below 0.5 mA at the highest voltage likely to be met; about 800 kĪ© suffices up to 240 V AC, and 1 MĪ© is specified because it is a standard resistor value[3] |
| ESD mat and earth cord | A static-safe bench surface | Same rule: the mat's earth cord goes to earth through a current-limiting resistor[3] |
| Safety goggles | CRT work, spring-loaded mechanisms, desoldering splatter | Required for CRT work because of the implosion hazard, not the electrical one. See CRT Discharge Procedure |
| CRT discharge tool | Discharging a picture tube | An insulated probe with a series resistor and a flying earth lead. A screwdriver clipped to an earth wire is a dead short and is not equivalent. Never wear a wrist strap or work on an earthed mat while discharging a CRT ā full procedure and sources at CRT Discharge Procedure |
| Nitrile gloves | Handling battery and capacitor residue, and peroxide | Not an electrical safety measure. See Battery Explosion, Capacitor or Corrosion Damage and Retrobrite |
| Isolation transformer | Working on live equipment with a hot chassis | Relevant to some televisions and monitors with a mains-referenced chassis. It does not make the chassis safe to touch; it removes the earth-referenced shock path |
| Fume extraction | Soldering | Rosin flux fume is a respiratory sensitiser. A fan pulling fume away from your face is the minimum |
Cleaning and consumables
| Item | What it is for | Notes |
|---|---|---|
| Isopropyl alcohol, 99 % or better | Flux removal, general PCB cleaning | Lower-strength "rubbing alcohol" contains water and additives that leave a residue |
| Washing-up liquid and warm water | Battery and capacitor residue, and dirty cases | The correct first treatment for capacitor electrolyte on skin and on boards ā see Capacitor Failure Symptoms. Boards must be dried thoroughly afterwards |
| Contact cleaner | Oxidised edge connectors, switches and potentiometers | Use a product intended for electronics; DeoxIT D5 is the usual example. Apply sparingly and to the contact, not the plastic |
| Compressed air or a blower | Dust | Canned air held at an angle can discharge liquid propellant onto the board. A bulb blower or a compressor with a moisture trap is better |
| Lint-free swabs and cloths | Precision cleaning | Cotton buds shed fibres into mechanisms. Do not use them on floppy drive heads ā see Floppy Drive Repair |
| Anti-static brushes | Dry dust removal from boards | Nylon or goat hair |
| Kapton tape | Masking during hot-air work, insulating repairs | Survives soldering temperatures; ordinary tape does not |
Specialist tools for vintage systems
| Tool | What it is for | Typical systems |
|---|---|---|
| Mass storage emulators | Replacing failed or missing drives | BlueSCSI and SCSI2SD for SCSI machines (classic Mac, Amiga, Sun, SGI); Gotek and equivalents for floppy interfaces; IDE-to-CF and IDE-to-SD adapters for later machines |
| Floppy imaging hardware | Reading and writing original media, including copy-protected disks | Greaseweazle and Kryoflux read flux transitions rather than decoded data. Also the practical way to test a repaired drive against known-good images ā see Floppy Drive Repair |
| Floppy alignment diskette | Radial track alignment | A certified alignment diskette and an oscilloscope. Tandon's service manual specifies the Dysan 224/2A for its 48 TPI drives ā see Tandon TM100-2. Alignment cannot be done properly without one |
| ROM SIMM programmer | Writing replacement ROM SIMMs | Macs with a ROM SIMM socket (SE/30 and the Mac II family, and the Quadras with the later 68-pin socket). Doug Brown's open-source programmer is the usual one |
| Logic analyser | Bus-level faults | For address and data bus problems a logic probe cannot resolve. Low-cost USB units are sufficient for 1 MHz to 16 MHz machines |
| Diagnostic ROMs and test harnesses | Bringing up a dead board | Machine-specific. For compact Macintoshes see Sad Mac Error Codes and Diagnostic Serial Console |
Related pages
- CRT Discharge Procedure
- Capacitor Failure Symptoms
- Battery Explosion, Capacitor or Corrosion Damage
- Floppy Drive Repair
- Hard Drive Maintenance and Repair
References
- ā Alloy Temperature Chart, Kester (ITW). Melting ranges cited: Sn63Pb37 183 °C (eutectic, single point); Sn60Pb40 183ā190 °C; Sn96.5Ag3Cu0.5 (SAC305) 217ā220 °C; Sn99.3Cu0.7 227 °C.
- ā Retro Chip Tester Professional ā User Manual, 8Bit-Museum.de (Stephan Slabihoud). Cited for the device being a standalone tester rather than a programmer or a TL866 accessory, and for its stated coverage: over 50 SRAM types, over 25 DRAM types, over 900 logic ICs, ROM/PROM/EPROM reading and identification against a database of approximately 400,000 entries, cartridge dumping adapters for C64, VC20, Atari VCS and MSX, and programming support for the 2708, 2716, TMS2716, 2532, 2732 and 2564 EPROMs only.
- ā 3.0 3.1 ANSI/ESD S1.1, Wrist Straps, ESD Association. Cited for the requirement that a wrist strap incorporate resistance sufficient to limit current to less than 0.5 mA at the highest voltage that may be encountered; that nominally 800 kĪ© is sufficient for voltages up to 240 V AC; and that 1 MĪ© is the specified nominal value because it is a standard discrete resistor value. Discrete current-limiting resistors are normally placed at the cuff end of the cord.