x68000:x68000_xvi_compact_audio_troubleshooting_and_repair
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| x68000:x68000_xvi_compact_audio_troubleshooting_and_repair [2012/02/27 20:55] – eidis | x68000:x68000_xvi_compact_audio_troubleshooting_and_repair [2012/02/27 20:56] – eidis | ||
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| *If the sound is coming out distorted or at a very low volume, the first thing you can try is replacing all capacitors. | *If the sound is coming out distorted or at a very low volume, the first thing you can try is replacing all capacitors. | ||
| *If that does not help, you could have a bad amplifier on Op-Amps (MC3403) or the dual channel DAC (YM3012). It could also be a power regulation problem on amplifier part. You can check this with a voltmeter on op-amp (pin 4 and 11). They should be +12v and -12v. If there is a PSU failure on -12v rail, it will cause distortions. | *If that does not help, you could have a bad amplifier on Op-Amps (MC3403) or the dual channel DAC (YM3012). It could also be a power regulation problem on amplifier part. You can check this with a voltmeter on op-amp (pin 4 and 11). They should be +12v and -12v. If there is a PSU failure on -12v rail, it will cause distortions. | ||
| - | *Please note that the acid from leaked capacitors can eat up traces above and below the solder mask and traces which look fine can be corroded and broken below it. Please test all suspected traces for continuity. | + | *Please note that acid from leaked capacitors can eat up traces above and below the solder mask and traces which look fine can be corroded and broken below it. Please test all suspected traces for continuity. |
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x68000/x68000_xvi_compact_audio_troubleshooting_and_repair.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1