Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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Hc-p4752 black screen when powered on.

You answered a question for me the other day about this tv (hc-p4752) not turning on at all after repair and you suggested checking to make sure solder wasn't bridged. It was and we fixed that so, now it powers on but it just has a black screen. We just can't seem to get everything right. If you have a suggestion on what to do next , I'd really appreciate it.

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Glad i could help ...now the black screen .. remove the back turn it on and look at the actual tubes
the base of the tubes should have a reddish glow if not the set isnt fully on look at the top of the tube if its on you should see a box or a dot etc
if both conditions above are true then you have damaged the stks you will need to replace them again
you can order from here $7.99 each http://www.electronix.com
remember to solder carefully stks do not take shorts well
if you dont see anything in the tubes you may have damaged the regulator too if you have a multimeter handy (and you know how to use it)while the set is running check (pins 15,18) for +28 volts {pins 16 ,17 and 19} for -28 volts if you dont get around those voltages you will be replacing the regulator too its probably an str (something or other) look around where the power cord plugs in for a big transistor looking thing..
good luck


Posted on Sep 23, 2008

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The resistors are 3.9OHM you can get the ICs you need as well as the risistors at the following link. They also provide free instalation instructions and free online instant messageing with a tech when you do the actual repair. If your model is the HC-P4752 you will need two STK392-010 Convergence ICs as well. heres the link.
http://servicemanuals.vstore.ca/

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