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TDS 540 problem

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 I've just finish to check the voltage and if I take correctlly, all the voltage are zero!!
Securly a psu failure.
Any idea in what could be the problem? Bad capicitors? bad transistors?
There are  Any others common failure of this psu a part of the capicitors?
Thanks for the helps.
Best regards, Alberto Vaudagna.

So just find some component blow on psu. VR4 and VR5 seem overheated, Q9 is sorted and a 200ohm resistor read about 100ohm (low consider the resistor is 5%).
I wish it could solve the problem.


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