Editing Macintosh TV Troubleshooting (section)

== TV Tuner Specific Issues ==
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''TV Tuner Troubleshooting'''
|-
! Symptom !! Possible Cause !! Recommended Action
|-
| No TV reception (snow/static only) || No antenna connection, tuner failure, capacitor leakage || Check antenna/cable connection, recap TV tuner board
|-
| TV mode won't activate || Software issue, remote/keyboard problem, tuner board failure || Reinstall TV Setup software, test keyboard command (if available), inspect tuner board
|-
| Channels won't change || Remote battery dead, IR receiver failure || Replace remote batteries, clean IR receiver lens
|-
| No sound in TV mode || Audio circuit failure, muted setting || Check audio cable from tuner, verify volume settings
|-
| Rolling picture || Vertical sync problem, capacitor failure || Recap TV tuner board, check tuner alignment
|-
| Snowy or noisy picture || Weak signal, failing tuner components || Check antenna connection, recap tuner board
|-
| Composite/Audio-In not working || Input jack failure, cable problem || Test with known-good cables, inspect RCA jacks for corrosion
|}

'''Note:''' Analog NTSC broadcasts have been discontinued in most regions. The TV tuner will only work with:
* External analog video sources (VCR, laserdisc, DVD player with composite output)
* Cable TV systems still providing analog channels
* RF modulators converting modern devices to channel 3/4

'''Required TV Software:'''
* TV Setup version 1.0.2 (included with original system)
* Compatible with System 7.1 through 7.5; may have issues with 7.6.x