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Samsung PS-42E7HX/XEC Power on problem

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rotergoggo:
Hello people ,
I 'm new here and I'm from Germany .
Please forgive me for my bad english .
So now , I have a big problem with this TV !
When I turn the TV on , starts the relays on the power supply to clicking , and the power LED flashes 4 or 5 times , this game is repeated again and again.
I have renew, on the PSU, 2 transistors ( QU 801 + QU 802). After that I checked if all voltages are present. All voltages are there!
Then I found out, in a Russian forum, if on the logic board and PSU bridging of contacts that can leave the TV running in a test mode , it operates , the TV shows some test images (white, red, blue, and a white beam) this repeated again and again. After remove bridging: Clicking again .
Is the error on the motherboard? I checked the voltageregulators on the motherboard , also here are all voltages available! can you please help me? I do not know how I can find the error.
Maybe one of you ever had this error. I hope I finally expressed understandable .

Many thanks for your help .
Klaus

jordan:
Chassis D74A
Check or change zener diode ZD-8854 and ZD-8855 (all 1N4764),R-804-805-806 in series (all 1M),CS-814 (22uF/450V)
-Upgrade firmware

rotergoggo:
Hi jordan,
thanks for the quick feedback. First I have to tell the in the TV a mother board with the NR. Built D73B.
Here comes the next question: Are the two boards the same?
Nowhere have found the firmware for the tv!
Can you possibly provide me the firmware to disposal, or where can I get them?

Thanks again

regards
Klaus

tv tony:
Nothing wrong with your English. It's perfect in comparison to some posts. I will download it when I return home this evening. Welcome to the forum.
Tony Walker

rotergoggo:
It's all cheese with the Google translator. What should I do?
All very funny. :57:

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