Samsung spn4235 need power supply

When you remove the bad check for bulged electrolytic caps, that need change, or change out the power supply.

http://www.retrevo.com/s/Samsung-SPN4235-TVs-review-manual/id/275bh940/t/1-2/
www.scribd.com/doc/.../LG-TV-Plasma-Training-Manual
http://forum.electromaniacs.com/topic/6146-samsung-samsung-plasma-training-manual-ppt-zip/
Please find service manual and a user manual above. You most likely have a switchmode power supply problem, the PSU, is shutting down, for safety reasons, due to a fault, that may cause a fire and explosion or both. use these manuals to isolate your problem

sounds like you fried your digital board or power supply not sure need more info on what tv is doing

Most likely power supply is dead,but there is a small chance that the power cord has been burnt out.If your TV is wall mounted or left very little room behind the tv to allow it to"breath",that could happen.
So,stop by Fry's to get a power cord and replace yours and see if that works or not.If not,it is time for a repairman to do his/her work.You are right,it is not cheap.
Next brand:New Pioneer KURO plasma tv,case closed!Reliable,and top of the line.
solutiondoct

SOUNDS LIKE IT COULD BE Z-SUS BOARD...POWER SUPPLY IS PROBABLY OK IF YOU HAVE SOUND...WHEN Y-SUS FAILS ..IT USUALLY CAUSES SET NOT TO TURN ON AT ALL...CALL ANDREWS ELECTRONICS IN CALIFORNIA WITH MODEL NUMBER...THEY WILL GIVE YOU PART # AND PRICE...JOE ACE

you can get the power supply and/or the service manual (with schematics included) here.
http://www.samsungparts.com/search/search.asp

This can be from the power supply, main processor, screen drive, or the screen itself.

The modules must be tried to determine the defective one.


Jerry G.

POWER SUPPLY IS WORKING IF YOU HAVE SOUND..WHEN Y-SUS GOES BAD..IF PUTS HEAVY LOAD ON POWER SUPPLY...WHEN YOU TRY TO POWER UP UNIT..IT WILL GO TO IMMEADIATE SHUTDOWN...THIS IS NOT THE CASE HERE..YOU SAID YOU HAVE SOUND...SOUNDS LIKE A BAD Z-SUS BOARD PROBLEM TO ME..CALL ANDREWS ELECTRONICS IN CALIFORNIA FOR PART # AND PRICE..JUST GIVE MODEL #...JOE ACE

Power supply foult.

Remove the Power Supply cable to Y Main board and check the Vs voltage in Power Supply board.
1. Vs voltage is OK, replace the Logic board or Y Main board.
2. Vs voltage is NG, replace the Power Supply board.