Question about Audio Players & Recorders
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Posted on Jan 02, 2017
SOURCE: Power don't turn on
Look for a large aluminum heat sink with the output transistors bolted to it. You should see anywhere from 4 or more large transistors bolted to it. I doubt that the protection circuit is malfunctioning. I would bet that it is doing exaclty what it is supposed to do. If you do find some bad output transistors, be sure to check all the components that work in conjunction with those transistors. Good luck.
Posted on Apr 09, 2007
SOURCE: Stopped working
I had a similar problem with a jvc 8040. when I replaced the fuse it became very obvious that the b1560 output on the center channel was blown (smoke and sparks, always a dead giveaway). I haven't fixed the center channel yet but simply unplugged the center channel board and removed it from the unit. Now everything works fine except of course the center channel. Pre outs still operate just fine so a slave amp could be used for center channel power, or you could just go and buy a marantz amp; I did and then I realized that I was lucky that the old jvc quit.
Posted on Jan 30, 2008
SOURCE: Problem with DVD player
i have had samsung surround sound for couple months, only been used once, now when i power up, protect is displayed on front and then powers down, also, when it does work, sound is extremely low compared to when i first used it.
Posted on Oct 21, 2008
SOURCE: Power supply board bad, SNC61,
Because manufacturers these days lean toward complete board replacement rather than providing individual components for these, it would be easier to try and obtain another PSU PCB for this model series, assuming a spare is available. I doubt it would be economical or practical to repair this DVD player, since it sounds like the PSU has burnt out/blown up - major parts have been compromised within it; therefore making any repair cost prohibitive. You can always submit the player to a service centre for a second opinion, and/or you can simply ask them where you can obtain a good working (inexpensive) secondhand PSU board from (if that's what you want to do) for this model so you can fit it yourself. It is up to you as to what you decide to do from here - but it could prove expensive - and possibly unreliable in the long term.
Samsung have a habit of using unusually rated/valued non-standard components in their appliance power supplies, which makes the repair/modification harder. Often these parts are impossible to obtain, and some modifications don't work. You can try though. If you do manage to obtain replacement parts for this board, and you go ahead to try and fix it, I do recommend that you replace ALL the electrolytic capacitors on it as well. If at the end of it all, the board is still dead, cut your losses and consider purchasing a new player - but only as a last resort. I doubt you would be able to replace the plug sockets (SNC...) but if it is just dry solder joints on those as well as the rest of the board, retouch them.
Posted on Apr 06, 2011
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