Westinghouse LCM-19w4

[IRShifty]

This monitor would power on and off in a cycle, when I opened it up it had lots of swollen capacitors, I replaced them all with ones from digikey and now when I power it on the component in the picture starts hissing even when the power LED is off and when powered on the power LED will cycle on and off. When installing the new 22uf 50v I think some of the copper side of the board came off and I'm not sure if it is making a complete connection.

[Nama]

Re: Westinghouse LCM-19w4

I have seen this also and can never pin point the exact source of the sound. I you do think the missing copper is a problem, use an exacto knife and scratch off the protective coating next to the Cap then bend over your terminal and re solder to the fresh copper making a direct contact. Good luck, Jacob

[EGuevarae]

Re: Westinghouse LCM-19w4

... the power LED will cycle on and off.

SMPS detecting a short and resetting itself?
Do as Jacob suggest to rule out a bad contact on that cap.
Which caps did you replace? All of them? Same specs?

[IRShifty]

Re: Westinghouse LCM-19w4

cant seem to make a solid connection with that capacitor. Its in such a small spot. I replaced all of them with same specs.

[EGuevarae]

Re: Westinghouse LCM-19w4

cant seem to make a solid connection with that capacitor. Its in such a small spot.

Next step: posta pic of the underside of the board, where the cap is soldered. Then we can figure something out.