Fix to issue where no output from fixed outputs but headphone output works
I saw you suggested replacing R428 in a post you made to the problem with Bose Lifestyle 5 system not outputting from Fixed outputs but the headphone output worked fine.
I have a similar issue but cannot track down R428 on the boards in my system. Is it on the underside of the board with the display attached? I cannot find it on the top. Perhaps there are different rev's of the system that may not contain R428.
Any help you can offer would be very muxch appreciated.
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Some of the new systems have a separate headphone amplifier chip. In that case when your wires came off , they must have shorted a second damaging the output amplifier. The protection circuit turns on disabling both the channels . On Sony systems a warning display comes on and the stereo goes to standby mode till the fault is fixed .
Since you all ready tested the wiring and speakers, one or more audio output ic packs have shorted and will need to be replaced, you will need a technician to check the extent of repairs that will be required and I suggest an estimate.
Hi... Try one other thing..headphones. If there's only 1 channel in the headphones then you'll need to take it to a tech. Depends on where in the country you are as to a good tech. I know some...even me in the Northeast
I cannot exactly solve this issue but I can make a comment based on investigation. Lots of people have this issue but there are very few comments to help solve the issue unfortunately.
I have the same issue and have been able eliminate various things because I have a second complete Bose Lifestyle 5 system.
It is clear the issue does not lie in the Sub and is related to the Music centre unit. I can use a second identical music centre to power my sub just fine and my broken Music centre cannot drive my second sub.
Now the issue is knowing where to track down R428 in the music centre which is the suggested fix to this issue. I have opened my unit and there are resistors various Resistors in the 400 range but no R428.
If anyone can help with the location of R428 in the Music Centre I would be very grateful.
I'll need to look up your specific model to be sure, but I believe that the speaker outputs come from an amp pac. The headphones are driven by an opamp IC. The outputs are blown on this. If you can solder, you should be able to repair this. I'll look up the parts required and get back to you.