First off, really nice web page!!!
There are 2 post on your web site for this issue that I replied to. Pioneer SD-643HD5 does not power on. The unit is blowing a fuse labeled FU303 on the power assembly model; part number AWV1887 or AWV2011. I am experiencing this issue many times and am tired of replacing fuses. Do you think I should replace the power assembly module? If so, any hints on replacing this part? It appears to be cabled to the other modules, etc.
Thanks in advance for any help,
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I had the same problem and it was the flyback transformer on the power supply board.it cost me $375 for the board.just make sure you ground yourself because the static electricity could fry it all.when unplugging the cables mark them and be careful.use a jewlers flat head scewdriver to unlock the cables.use a can of compressed air to clean off the dust.
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If you were to log on to the
manufacturer's web site, I think you will be pleasantly surprised as
usually one is able to download, by model number, Customer
Instruction Manuals, list
of Dealers for spare part supplies and Driver
Just Google the manufacturer's name and
follow the links. Make certain you are directed to the manufacturer's
web site as some search engines direct you to other sites and they
charge for the information that is normally free of charge.
The fuses may not be your problem--I have fixed several of these---The large power board is on the right side as you look from the back?
Lots of these sets develop bad solder connections on that board--several sites on the internet offer to have you remove and send them the board to resolder--this set used lead free solder and after some years has problems--a few I have opened had clearly broken solder joints--I usually in this case remove the board(mark all the many plugs and make a diagram) and solder almost all of it by hand----usually fixes this kind of trouble.
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