Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television - Page 7 - Answered Questions & Fixed issues

I like your Samsony, sorry to hear that but we still repair them in Australia I thing your problem in the main printer circuit borad included convergence drive but the part No. may be different from US and Australia check if that part No. exiting in US BP94-00756C

Not simple at all it require a Technician yes it very common problem in the high voltage output you can replace the whole printer circuit board but it require to adjust a few thing after replace the new PCB such high voltage for 3 picture tube and convergence
Part No. is BP94-01249G or L

I thing your problem is in convergence output it require Technicain job I can give part No. to order from Samsung but you still need to adjust convergence after you replace that part the adjustment require remote control and service manual and patient for instruction how to do convergence I can post it to you OK
now part No. is BP94-01259G or L

Did you replaced 2 IC convergence as well or just 2 resitors 3.9 ohms ? if you did replaced 2 IC then you might have probelm in convergence drive it is1 of the PCB mount vertical on the left side from the rear view under part BP95-00415C you need to readjust the convergence by using your remote control just follow in the servive manual

What colour raster it seem like you got the coolling oil inside the picture tube leaked out is typical from Samsung to confirme your problem you should open the back of your rear projector and look if you see any sight oil or liquide on the PCB printer circuit board if yes it require an technician to remove the PCB and clean this oil if not too much damged and install 1 modifications kit if no oil leaked you might have problem in high voltage it call deflection PCB part No.BP94-01259G or L you still need to adjust convergence after replace a new DEF PCB require Technician level 1
Cheers

it is due to the problem of picture tube

you need to take it in and have it repaired

Burned out? How? Depending on the age of the TV, there are two boards, possibly a third if it's a later model. The most likely culprit is the PWR & DEFL board - P/N BP94-01266a, and it's readily available for around $150, but before you order it, tell us more.....Do you have sound, etc.

Hi there,

I had a very simular problem and I managed to arrange it yesterday. Try and check the capacitors in the power supply. I found 2 capactors which I replaced and the picture improved alot. Also the convergence improved alot.

Give it a try.

baboso

no sound an d picture, but the tv have power

if the blue lines runs across the screen in the center its a vertical deflection problem it will need to be diagnosed.

It sounds like there is a fault on the chroma panel of some kind.

Without sticking my neck out too far I think a component failed on yor tv initially and took out some over voltage protection in the process and what you are seeing and smelling is the result of whatever is being cooked alive. It does not mean there was a manufacturing fault with the tv as this has happened on other appliances as varied as can be. Please call out a competant technician and if you can help it dont switch it on again to avoid further damage to the unit and also to expose yourselves to the risk of fire or electric shock. Hope this was of some help.

It sounds like the popping noise you heard was a capacitor blowing its top somewhere in the tv. Sorry I cannot be more specific but if you manage to find out where this cap has gone also check any resistors near it as they can be also damaged. If you cant do this call out a competant technician. Good luck.

I think it could be a faulty diode on the power supply board. If you can check this for yourself otherwise call out a competant technician. Good luck.

I think you have a fault on the chroma board and on the picture frame board. If you can trace it yourself try these two locations otherwise call out a competant technician. hope this helps.

picture is ok /converg.-ok/;diagonal lines on screen; looks like waves.Appear on tv and video modes.I observed same problem on some another tv in my practic,but this case is worse.

Hi there,

Thanks for your posting in FixYa.

I think the IC placed in it is not compatible. So you need to go for a repair shop to diagnose it thoroughly.

Dont forget to vote me. Have a Nice day.

Regards
ELLIN

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