Hi
Im trying to fix this Phillips 32" led tv, 32PFL4507/F7B. There is a humming sound when the power plug is connected. The humming goes away when I disconnect the cable from the powerboard to the mainboard. The humming seems to be around the mosfet/330uf capacitor area of the powerboard.
I have taken out the mosfet and tested it with a DMM and it seems to be fine. I also checked the voltages going to the mainboard and they're totally off. I'm not getting 3.3v standby (no light at the front), where it is supposed to be 24v, i'm getting 2.3v, and where it is supposed to be 21v, I'm getting 1.0v.
Any suggestions as to where I should check next would be much appreciated.
thanks
Im trying to fix this Phillips 32" led tv, 32PFL4507/F7B. There is a humming sound when the power plug is connected. The humming goes away when I disconnect the cable from the powerboard to the mainboard. The humming seems to be around the mosfet/330uf capacitor area of the powerboard.
I have taken out the mosfet and tested it with a DMM and it seems to be fine. I also checked the voltages going to the mainboard and they're totally off. I'm not getting 3.3v standby (no light at the front), where it is supposed to be 24v, i'm getting 2.3v, and where it is supposed to be 21v, I'm getting 1.0v.
Any suggestions as to where I should check next would be much appreciated.
thanks
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