Re: Samsung UA60H7000AW Power Supply

Hey - I just wanted to say thanks for all the support received. I was not able to repair the board - but the replacement from TVpartstoday arrived on Wednesday, and I am up and running again.

FYI I check some more components on the board and found a short between the pins on QP802C (EYA7) - not sure why this didn't cause issues until I had replaced ICM801S.

Thanks again.

Re: Samsung UA60H7000AW Power Supply

Unfortunately the fuse has blown again. Is there a way to current limit the AC input to find what might be causing the fuse to blow?
I have ordered a new power board from TVPartsToday - hopefully they are a reputable company.

Re: Samsung UA60H7000AW Power Supply

Thanks for the reply R_J;

I ordered and tried replacing ICM801S - but failed at soldering Pin 12 (GND) correctly. When I connected power The main fuse FP801S blew - so now I am waiting to try again. Those capacitors (CM814, CM809 and CP812) test OK (All sub 1 ohm ESR in circuit)
The forward voltage of DM851C & 2C is 120mV DM853C &4C is 380mV

I shall post again following the next test.

Re: Samsung UA60H7000AW Power Supply

Apologies for the delay in responding - I was waiting for some test equipment to be delivered.

I have tested CM803 out of circuit to 26.7 nF and ESR of 64.6 ohms - does that Sound OK?

Re: Samsung UA60H7000AW Power Supply

Thanks for the responses so far.
I checked continuity between these pins (3,4) and (7,8) and they test open circuit. I have attached another pic from a USB microscope.
CP806 and 807 appear to be largish Electrolytic across the output of the rectifier - these give me 320 DC across these terminals also attached

Nothing should have been replaced or re soldered - it has never been in for service - the TV took a power surge or lightning strike a while back and just looking at it now. The surge took out heaps in the house...

Hi Team,

I have a 60" Samsung with (I think) a Broken power supply BN44-00716A.

Fully dis-connected from the TV, there is 0 VDC on STB (JP911)

I noted in another thread someone mentioning issues around the 6A01, CM803 and DM809

Here are my voltages on ICM801S
Pin DC AC
1 184 394
2 NC
3 0 0
4 0 0
5 0 0
6 6.7 0
7 0.3 0
8 0 0
9 0 0
10 10.3 0
11 0 0
12 0 0
13 NC
14 6.7 11.6
15 6.7 11.6...

Re: Samsung UN60H7150AF Power Supply

Sorry to hijack this thread - I have the same board with 10.4 VDC on JP885
0 VDC on STDBY

Any hints as to where to look next?...