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I have a Panasonic AG-5710P. I saved it from going to e-waste several years ago, but found that it had terrible video output due to bad caps at the time. Regrettably I did not test the audio at that time.
It sat in my house for a few years and I recently found the time to recap it. I replaced every capacitor on every board, including the PSU and the little board by the video head. Exceptions are two of the non-polar capacitors on the main board that I overlooked when ordering. I have a good amount of hobbyist electronics experience and I've recapped other devices before, but my VCR experience is very minimal.
After reassembly everything seems to work perfectly except that there is zero audio output. The VU meters never move at all. I've tried the L/R outputs, nothing. Headphone jack outputs nothing. I've toggled all the switches (audio related and otherwise) and there is no change. The fact that there are two audio boards (presumably one for linear and one for hifi) imply to me that the audio boards are likely not the issue, or I would've expected at least one to work. Most likely it's downstream of there somewhere preventing audio from getting to the outputs, but that's pure speculation on my part.
Anyone have any suggestions on where to start? I do have a service manual PDF somewhere, but if anyone has experienced this before and can point me in the right direction I would appreciate it. Thanks
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