Shmingers Posted July 13, 2023 Report Share Posted July 13, 2023 Hi everyone, I picked up a never-opened "for repair" 1.0 Xbox...the previous owner mentioned it would boot, but had audio issues. I've seen many issues that turned out to very minor fixes, so I said what the heck I'll give it a shot. He was right. It boots fine, but the audio has severe crackling whenever a sound should be playing. Boot sequence, main menu, games, all have crackling noise over the audio. I've tried the obvious things like changing the IDE cable, cleaning all contact points in the AV port, opening it and giving it a thorough cleaning, plus removing the clock cap. There was some clock cap leakage, but nothing too severe. I checked the traces and everything seems in order. I even tried cleaning the spots under the screws to make sure there was proper grounding. Is it possible there's clock cap acid damage to the audio hardware? Does the MCPX chip control the audio? I'm trying to determine whether this board can be salvaged, or whether I should just stop trying and just replace it. Thanks all in advance! Quote Link to comment Share on other sites More sharing options...
MadMartigan Posted July 13, 2023 Report Share Posted July 13, 2023 Looks like you’ve tried a lot so far. I can’t help but notice that you didn’t mention trying a different composite or component cable. That would have been the very first thing that I tried to save some time. Quote Link to comment Share on other sites More sharing options...
dtomcat Posted July 13, 2023 Report Share Posted July 13, 2023 How do the other Caps look? Quote Link to comment Share on other sites More sharing options...
Bowlsnapper Posted July 13, 2023 Report Share Posted July 13, 2023 Also, what happens when you set the output to "stereo" instead of DOLBY SURROUND? In fact, what ARE your audio settings? Quote Link to comment Share on other sites More sharing options...
Shmingers Posted July 13, 2023 Author Report Share Posted July 13, 2023 9 hours ago, MadMartigan said: Looks like you’ve tried a lot so far. I can’t help but notice that you didn’t mention trying a different composite or component cable. That would have been the very first thing that I tried to save some time. Hi, yes sorry I didn't mention that I tried it with the original composite AV cable it came with, the composite AV cable from my own Xbox, and a Pound cable I keep for testing. No luck on any of the three. Exact same problem. 6 hours ago, Dtomcat18 said: How do the other Caps look? The other caps on the board are flat with no leakage, including the power rail caps. TBH I assumed it was those myself, until I opened it. 4 hours ago, Bowlsnapper said: Also, what happens when you set the output to "stereo" instead of DOLBY SURROUND? In fact, what ARE your audio settings? Out of curiosity, I soft-modded the unit to see if broader access to the settings would help, but no. And yes it's in stereo. Quote Link to comment Share on other sites More sharing options...
Bowlsnapper Posted July 13, 2023 Report Share Posted July 13, 2023 10 hours ago, Shmingers said: Hi, yes sorry I didn't mention that I tried it with the original composite AV cable it came with, the composite AV cable from my own Xbox, and a Pound cable I keep for testing. No luck on any of the three. Exact same problem. The other caps on the board are flat with no leakage, including the power rail caps. TBH I assumed it was those myself, until I opened it. Out of curiosity, I soft-modded the unit to see if broader access to the settings would help, but no. And yes it's in stereo. That's a major let down. Just wanted to see if that might kick it out of its stubbornness. sometimes it really is that simple. 1 Quote Link to comment Share on other sites More sharing options...
lopenator Posted July 14, 2023 Report Share Posted July 14, 2023 mcpx chip could be failing. a symptom is choppy audio. Quote Link to comment Share on other sites More sharing options...
Bowlsnapper Posted July 14, 2023 Report Share Posted July 14, 2023 2 hours ago, lopenator said: mcpx chip could be failing. a symptom is choppy audio. Dude, why does the MCPX short and fail so much? Quote Link to comment Share on other sites More sharing options...
lopenator Posted July 14, 2023 Report Share Posted July 14, 2023 yeah.. that's just life snapper. nothing last forever 1 Quote Link to comment Share on other sites More sharing options...
Shmingers Posted July 15, 2023 Author Report Share Posted July 15, 2023 On 7/13/2023 at 8:31 PM, lopenator said: mcpx chip could be failing. a symptom is choppy audio. That would explain a lot TBH. *sigh* Thank you for chiming in! Quote Link to comment Share on other sites More sharing options...
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