Television with no standby light, no voltages at the output of the smps transfor

[robsims]

Hi,

I have a television with no standby light. When i measure voltages at the input pins of the smps transformer i measure 179 DC volts on two pins. The other two pins are negative, so I assume the voltages on the primary pins of the transformer are good.

When i measure voltages at the output pins (secondary side) of the transformer i get zero volts. If i measure between the ground pins and the other pins i get zero voltage. Is there something wrong with the switching IC on the primary side? Can someone explain why i don't get voltages on the output pins of the transformer. MAny thanks in advance

[madires]

I guess you won't like my comment, but I'd recommend to let someone experienced in SMPSU repairs fix it.

[robsims]

Madires sure i don't like you're comment. What is this blog for?. To learn or what? I'm learning myself tv repair. I can already fix backlight problems. If you don't want to help or can't help please don't comment

[wasedadoc]

I agree with madires especially as the OP does not seem to have enough intelligence to give any details of the TV.

And posting a repair question in the beginners section instead of the repair section.

[tunk]

Photos please.
I'd guess that the standby PSU has to work in order to switch it on.

[Sorama]

There is a standby power supply.
Try to find that one (in proximity of the standby LED).
As long as the standby PS is not working, the other smps won’t start.

If standby ps is not working, one can inject the same voltage by means of a bench power supply.

(If there is no short).

[robsims]

I added some pictures of the powersupply. It doesn't have the standby voltage. I think the 12 will power up the standby light

[robsims]

The capacitors are good. Forgot to mention that i replaced the mosfet on the hot side because it was shorted, as a result of a powersurge i guess. My guess is that the chopper chip is bad, but i don't have an oscilloscope to test it