JVC X'Eye FM Audio Problem

[shymog]

I bought a JVC X'Eye knowing it had an audio problem, woe is me! I had hoped it was a capacitor issue, and while there were a few older/bulging caps, a full re-cap hasn't solved the issue.

Here's what it sounds like: http://youtu.be/OjPDd2CIq9w

The system works SPECTACULARLY with the exception of this audio issue. There is no visible damage and I am using the original JVC power supply.

I've replaced all 52 electrolytic capacitors (35 on the main board, 17 on the B board) and cleaned everything extensively.

Any ideas what else I can try?

[ApolloBoy]

Check for damaged traces or busted components of any kind, those are some very strange problems.

[APE992]

You sure nothing went in backwards?

[shymog]

You sure nothing went in backwards?



That video was taken before anything was switched around inside. All the internal parts and solder joints appeared stock until I started playing around inside.

I need to replace my broken multimeter badly, I was hoping that someone would have experienced this kind of sound issue before.

BOARD IMAGES: http://imgur.com/a/vpFCN

I posted images of the main board (where this problem has to be -- it exists without Board B plugged in (I think that mostly controls the microphone input and CD-ROM drive?) as well as where I think the traces for audio go -- from what I'm read they come off pins 55/56 of the 315-5660 ASIC. I can't follow the traces as it gets lost in the silk-screening and bundle of surface-mount components just to the lower-right from the ASIC.

Without having diagrams of how audio travels in this it's a bit of a pain thanks to my inability to follow those traces. What could make the sound go so whacked and off-pitch?

EDIT: I should note that I tested that X'Eye and made another video with a VA0 Genesis 2 just before for my own comparison -- I did not need to adjust the volume at all, so amplification is fine (I'm assuming).

EDIT2: More info -- I am using the correct original power supply. I have switched to a Genesis 2 adapter (I know to not let it turn on the CD-side of the device with it) and I get the same performance/results from it. I am of course back to using the correct power adapter for all tests, since I'm now confident the adapter is not the issue.

[shymog]

Does anyone have pinouts from the 315-5660 ASIC handy, or have an idea of how I can check the audio being produced directly from there?