Josh: Created Macintosh Performa 5200CD Capacitor Replacement Guide

2026-02-10T10:52:59Z

Created Macintosh Performa 5200CD Capacitor Replacement Guide

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Replacing electrolytic capacitors (recapping) in your '''Macintosh Performa 5200CD''' is essential for long-term reliability. This guide covers the 5200CD and all related variants including the [[Macintosh Performa 5200|Performa 5200]], [[Macintosh Performa 5210CD|5210CD]], [[Macintosh Performa 5215CD|5215CD]], [[Macintosh Performa 5220CD|5220CD]], and [[Power Macintosh 5200 LC|Power Macintosh 5200/75 LC]].

'''Note:''' The Performa 5200 series uses predominantly through-hole electrolytic capacitors. Apple released two board revisions (Revision A and Revision B) with different analog boards; verify your specific board configuration before ordering parts.

== Capacitor Inspection ==

* '''Bulging Tops''' – A domed or bulging top indicates internal pressure from electrolyte breakdown; the capacitor has failed or is failing
* '''Leaking Electrolyte''' – Brown or rust-colored residue around the base or leads indicates leakage; replace immediately
* '''Corrosion or PCB Staining''' – Discoloration of the PCB around a capacitor indicates past or ongoing leakage; clean and inspect traces
* '''Visual Damage''' – Cracked cases, burn marks, or physical damage require immediate replacement

== Macintosh Performa 5200CD Capacitor Information ==

'''Important:''' Exact capacitor positions and values may vary between board revisions. The following information is representative; always verify against your specific board.

=== Analog Board Capacitors ===

The analog board contains the power supply and CRT deflection circuits. Capacitors in this section are subject to high heat and stress.

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''Analog Board Capacitor Specifications (Typical)'''
|-
! Function !! Capacitance !! Voltage !! Type !! Quantity
|-
| Primary filter || 220µF || 200V || Electrolytic || 1×
|-
| Secondary filter (+5V) || 2200µF || 16V || Electrolytic || 1–2×
|-
| Secondary filter (+12V) || 1000µF || 25V || Electrolytic || 1×
|-
| Secondary filter (-12V) || 470µF || 25V || Electrolytic || 1×
|-
| Deflection circuits || Various || 25–50V || Electrolytic || 4–6×
|}

'''Note:''' Analog board configurations differ between Revision A and Revision B. Parts are not interchangeable between revisions.

=== Logic Board Capacitors ===

The Performa 5200 logic board uses primarily through-hole capacitors. These are less prone to catastrophic leakage than surface-mount types but still degrade over time.

{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''Logic Board Capacitor Specifications (Typical)'''
|-
! Function !! Capacitance !! Voltage !! Type !! Quantity
|-
| Power filtering || 100µF || 16V || Electrolytic || 2–4×
|-
| Power filtering || 47µF || 16V || Electrolytic || 2–4×
|-
| Audio output || 100µF || 16V || Electrolytic || 2×
|-
| Decoupling || 10µF || 16V || Electrolytic || 2–4×
|}

== Capacitor Replacement Procedure ==

# '''Discharge CRT''' – Follow the [[CRT Discharge Procedure]] before working inside the unit
# '''Remove the rear housing''' – Release the clips and slide the rear cover off
# '''Disconnect cables''' – Note cable positions before disconnecting; photograph if needed
# '''Remove the analog board''' – Unplug connectors, remove mounting screws, carefully lift board
# '''Remove the logic board''' – Disconnect all cables, remove screws, slide board out
# '''Photograph and document''' – Record capacitor positions, polarity, and values before removal
# '''Desolder old capacitors''' – Use a temperature-controlled iron and desoldering pump or braid
# '''Clean pads''' – Remove old solder and any corrosion with isopropyl alcohol
# '''Insert replacements''' – Observe '''correct polarity'''; the stripe indicates negative
# '''Solder securely''' – Use quality leaded solder, ensure good wetting on both pad and lead
# '''Trim leads''' – Cut leads flush with the solder joint
# '''Inspect for shorts''' – Check for solder bridges or loose clippings
# '''Clean flux residue''' – Use isopropyl alcohol to remove flux
# '''Reassemble''' – Reverse disassembly order, verify all connections

== Recommended Capacitor Types ==

* '''Panasonic FR series''' – Low ESR, high ripple current, long life
* '''Nichicon UHE/UPW series''' – General purpose, high quality
* '''Rubycon YXF/YXG series''' – Good for audio circuits
* '''United Chemi-Con KZE series''' – Low impedance, long life

For the high-voltage primary filter capacitor, use a quality 105°C rated capacitor from a reputable manufacturer.

== Recommended Tools ==

* Temperature-controlled soldering iron (60W recommended for through-hole work)
* Desoldering pump (solder sucker) or desoldering braid
* Quality leaded solder (63/37 or 60/40, 0.5–0.8 mm diameter)
* Isopropyl alcohol (90% or higher) and ESD-safe brushes
* Multimeter with capacitance measurement
* Safety glasses and heat-resistant gloves
* CRT discharge tool
* Fiberglass pen for cleaning corroded traces

== Voltage Adjustment After Recap ==

After replacing capacitors, verify and adjust power supply voltages:

* '''+5V rail:''' 4.85V – 5.15V (target 5.00V)
* '''+12V rail:''' 11.9V – 12.7V (target 12.00V)

Measure with the system under load (booted to desktop). Adjustment potentiometers are located on the analog board if adjustment is needed.

== Additional Tips ==

* '''Test capacitors before removal''' – An ESR meter can identify failed capacitors without desoldering
* '''Work in sections''' – Replace capacitors in one area at a time to maintain orientation
* '''Use a capacitor kit''' – Several vendors sell pre-selected kits for specific Macintosh models
* '''Photograph everything''' – Document before, during, and after for reference
* '''Check for cold solder joints''' – Reflow suspicious joints while the board is accessible
* '''Inspect flyback connections''' – Cracked solder joints around the flyback are common failure points
* '''Replace the PRAM battery''' – While disassembled, replace the battery if not recently done

== Safety Warnings ==

'''Warning:''' The analog board and CRT contain lethal voltages even when unpowered.

* Always discharge the CRT before working inside the unit
* Do not touch analog board components while powered
* Use an isolation transformer if testing with power applied
* Keep one hand behind your back when probing live circuits
* If uncertain, have the unit serviced by a qualified technician

== Related Maintenance Pages ==

* [[Macintosh Performa 5200CD Troubleshooting]]
* [[Macintosh Performa 5200CD General Maintenance]]
* [[CRT Discharge Procedure]]

[[Category:Apple Vintage Computers]]
[[Category: Capacitor Replacement Guides]]

Macintosh Performa 5200CD Capacitor Replacement Guide - Revision history

Josh: Created Macintosh Performa 5200CD Capacitor Replacement Guide