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Request for RDENCA393WJQZ circuit diagram

 
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jrizer
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PostPosted: Fri Nov 18, 2016 2:01 am    Post subject: Request for RDENCA393WJQZ circuit diagram Reply with quote

I am requesting a circuit diagram for a Zebra LC0919-4001AC power supply circuit board used in a Sharp, model: LC-40D68UT television. The following is also on the circuit board: RDENCA393WJQZ. A fuse keeps blowing and I need to isolate the problem component. Your assistance with this would be greatly appreciated!
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Thu Nov 24, 2016 5:31 am    Post subject: Reply with quote

Ever since televisions have switched over to the modular system, finding specific diagrams are rare at best.
Short of replacing the entire module, your best bet is to get out the VOM, look for visuals and check the standard componets---that is if you have the skills.

As much as I disliked to see it, the days of "component level" replacement are pretty much history specially with consumer electronics. I know for a fact that often the board manufacturers no longer provide any sort of parts/support.
Now if you have a genuine interest in figuring things out, that is another story and believe me I have been through many many situations where there was no schematic.
If I am not mistaking, that entire module can be bought for around $60 on the net. Is it worth the time and effort?

You mentioned "blowing the fuse";
That means too much current and is usually caused by shorted device(s) such as diode ,transistor, FET, Mosfet etc. On many occasions it may turn out to be a single device while it could be several---you never know until you try it
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