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Samsung UE32C4000 PSU pulsing

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gazzagadget:
Hi all, newbie  :sign0144: on here but ex old school TV & video engineer, now in IT support for TV production industry.
 
Been asked by a friend to take a look at this Samsung UE32C4000 set.
Standby LED comes on, switching on with remote the PSU starts up then after a second or so protection shuts it down, then repeats cycle on for 1 second, off 5 seconds, forever until power removed. No visual signs of usual PSU suspects, stressed caps etc.
12V OP rail pulses up to 12V.

Power supply board is PD32AF0E-ZDY.

Has anyone a schematic of this PSU please, or any known faults like this on this set?

Many thanks in advance.

-Gary

jordan:
http://elektrotanya.com/samsung_ue32-37-40-46c5xxx_ue32c4000px_chassis_n92a_sm.pdf/download.html

michael first:
Hi,GG

power on, with cable from PSU to main disconnected;if the backlights remain on,main defective if 

not, PSU is the culprit (bn44-00351b).

jordan:
bn44-00351b

gazzagadget:
Many thanks for the replies and info, I'll let you know what I find.

-Gary

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