Question about Pioneer Audio Players & Recorders
Does anybody know where I can find a "FREE" user's guide or repair guide?
I need one so I can find the specs and schematics of this product that needs to be fixed ....
I think it is just the relay swith or the overload sensor that is out, but I need to know the layout, before attempting to fix
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Posted on Jan 02, 2017
SOURCE: pioneer SX1280 repair
I have taken my 1280 to Austin Stereo, they are honest , upfront, and guarantee their work. So impressed that I took a 1080 that two previous techs had butchered and they fixed it to like new specs.512-451-0408 is their #. They go out of their way to help those of us that are not well versed in techspeak. Both units sound superb with the big 15 inch Cerwin Vega speakers!!!
Posted on May 07, 2008
SOURCE: I have a Technics SA-GX470.
I have not solved it yet. I did find a similar schematic of another model. I have gone over the entire board checking connections first. What I see is the minus 14 volt regular running very hot. The voltage is OK but there is something drawing a lot of current. The plus side is cool. I am in the process of looking at all the loads on it but believe it may be the main power module. This unit has two modules with the main one for the left and right speakers and another that is for the center and surround speakers. It is cool and guess the the main one may be bad. Panasonic is the only source for this one and that is doubtful. The prices I have found is around $60 and a little expensive to buy and just try. I am going to make sure it is the problem before I recommend they spend that much up front. Technics is a low end Panasonic product and I have found this to be a very troublesome unit as well as others. It's design is complicated as all Panasonic products are. I worked on this unit several years ago and the same problem went away. I suspect one of the output transistors in the module has gone rendering the whole thing bad. Whatever happened to a simple transistor replacement. I will keep you informed.
Posted on Nov 15, 2008
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