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Samsung PS-42E7HX/XEC Power on problem

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rotergoggo:
Good morning,
I own board DA74A and not DA73B!
On the boards ZD-8854, ZD-8855 and R-804-805-806 are not present!
On the power board, CS-814 I have changed!
Relaises repeated clicks!
Where can I get the firmware?
Help please!

regards
Klaus

jordan:
What is the label (code) of your power supply

rotergoggo:
Label DYP-42V5
Code BN96-037 43A

rotergoggo:
Hello,
I think the error is to be found on the motherboard, because all voltages from the PSU are available. Bridging of contacts: pson + gnd on the PSU and bridging of contacts 3 +4 on logic board test pattern appearing.
What is the error?  :03:

Does someone have an idea?

regards
Klaus

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