Question about Samsung PCL5415R TV

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PCL5415R NO COLOR OR SOUND

My problems started with a high voltage sound that was so loud you couldnt hear over it. I could turn off the television for 30 minutes or so, turn it back on, and it would be fine for a while. The sound ended up going out all together. Then the blue started going out. Seemed like all I had was redish/green screen, but the images were fine. Today I have only black and white, with still no sound. Is this something anyone can help me with or do I need to go shopping for a new one? Thanks in advance for any help. ___J.A.

PCL5415R
Serial number- 39ZT650241V
VERSION 4

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On the secondary side of the horizontal output stage flyback transformer, they have a secondary supply output. This output comes off from a number of windings in the flyback transformer. These feed individual sets of high speed rectifiers and then they are filtered with electolytic capcitors. Some of these outputs also feed voltage regulators where regulation is required. Briefly, most likely there is a failure in this section and therefore a supply voltage is missing that is used to run the sound processing and colour demodulation.

If the voltage went too high for any instant from the failed voltage sources before they failed completely, there is a possiblity that other damage in the sound and colour processor sections.

I would suggest to take the TV in for an estimate to see if it is feasible to service. If it is only a number of capacitors and maybe a some high speed diodes and voltage regulators that have to be changed, most of the cost will be for the labour.

First get an estimate for the repair. Considering the age of the set, it may pay to get a new one.

Jerry G.

Posted on Apr 13, 2008

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