Hi everyone-
Before I dump this Panasonic SA-XR25 I thought I hit you up for suggestions.
It’s at least 10 years old and has served me well. I decided to hook it up after having it sit for a few years. 3 fronts and subwoofer crackle like crazy. If I play around (on/off, switch audio mode), it sometimes will stop and perform fine. But I’m going through all that.
Here are some pictures of the inside. I did notice something which what I’m pointing at. Also noticed the fan no longer runs.
Dump it?
Before I dump this Panasonic SA-XR25 I thought I hit you up for suggestions.
It’s at least 10 years old and has served me well. I decided to hook it up after having it sit for a few years. 3 fronts and subwoofer crackle like crazy. If I play around (on/off, switch audio mode), it sometimes will stop and perform fine. But I’m going through all that.
Here are some pictures of the inside. I did notice something which what I’m pointing at. Also noticed the fan no longer runs.
Dump it?
First, try cleaning all the switches/pots, and blowing dust out of the fan.
Then if it still has problems, dump.
Then if it still has problems, dump.
It looks like the power amplifier board is grounded via its mounting screws. I would loosen and retighten those just in case. Same might be true for the input board (?) on top of it.
BTW, I spot an AK4114 SPDIF receiver complete with two crystals for both 44.1 and 48 kHz multiples - they were not skimping on this one!
BTW, I spot an AK4114 SPDIF receiver complete with two crystals for both 44.1 and 48 kHz multiples - they were not skimping on this one!
If you don’t mind, take a look at the second picture. Towards the right there is a grey plate with ‘A1135’ (or something close to that). Right above it, in between the two round thingies (no idea what they are 😕) you’ll see some brown stuff that almost looks like it leaked from somewhere. Is that a concern or part of the build?
Thanks again!
The brown stuff is compound applied during production to prevent components in a SMPS from vibrating. Done in a hastely (time = money) manner. The thingies ar regular capacitors.
If they leak, the electrolyte is way more corrosive.
Stay with #2 and #4.
If they leak, the electrolyte is way more corrosive.
Stay with #2 and #4.
You may find this interesting ... Bad Glue
Apparently there was a run of mounting paste, used in the soldering process, that starts out tan or yellowish colour but ages down to a hard brown glue that actually turns conductive and can cause all kinds of havoc in a circuit.
Whenever I've seen it, I always take a tiny screwdriver and gently scrape it off the boards.
Aside from that... a really good cleaning of your controls and switches, blow the dust out, maybe check the drive voltage on that fan and then see what you've got and decide from there.