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My pioneer sx-1900 wont turn on,fuses and switch are ok and have read that it MIGHT be the output transistors but dont know what or where they are so i can source and replace them,problem is i cant get hold of manuals/diagrams to carry out the repairs. PLEASE help me,i am not an electronics tech but work on EFI cars day in day out so have a BASIC knowledge of electronic diagnosis/repair. thanking you Tim Baldwin

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SOURCE: Protect message when I turn on the receiver

call 800-488-7669 for tech support

Posted on May 27, 2007


SOURCE: onkyo tx-sv535

you tried reset on front panel? you hold down video 1 and then also press power off. the panel says "clear", then start up again.

Posted on Feb 08, 2008

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SOURCE: COBY TFDVD5605 Portable DVD Player repair tips

all potable dvd player work on 9V through cig lighter in your car adopters comes in three diffrent sizes.

Posted on Jul 20, 2008

ysastek
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SOURCE: MOTHERBOARD REPAIR

First off, is the motherboard actually the problem? If your motherboard has failed, the screen may come on and you may have some sort of raster (brightness) but thats as far as you get. Power supply failure is (in my experience) more common than mother board failures (usually) and may exhibit the same symtoms. Also a bad battery on the motherboard will cause funky things to happen on boot. (clock not right/failure to recgonize hard drives, etc). If you are certain a motherboard is a fault you should replace it ( unless you are VERY fluent in soldering/desoldering surface mounted components and component level repair and have a solid understaning of digital and D.C. circuits) More often than not, replacing the entier motherboard is cheaper and less of a hassle.

Posted on Sep 13, 2008

  • 1 Answer

SOURCE: NAD 7155 with one speaker channel not working

In my case, if I push in on the balance knob, I can get the channel that quits to work for a while.
This leads me to believe that the pot is dirty as opposed to a circuit or component failure.
A couple of years ago, I sprayed circuit cleaner into the pot as best I could and the problem disappeared but, it has returned.
My next attempt will be with one of the newer cleaner/lubricators that are available now.
I don't know if this will solve your problem but, it might be worth a try.
BTW, getting access to the volume/balance pots takes some doing. As long as you are there treat both pots.
Greydog(1)
G

Posted on Sep 22, 2008

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