philips 50pfp5532d/05 dead with red light

[shaunbt123]

hi there just looking for some advice,bought this plasma from someone who said he it was stuck on standby (solid blue light on front panel)he got a technician to look at the tv and told him it needed a repair kit.when i got the tv home i removed the back cover and saw the ysus to power supply cable was disconnected so i reconnected the cable and powered up again.but after a minute could smell burning from the ps board so i disconnected the power and now all i get is a solid red light on front of tv ,if i press the standby button the tv clicks and red light goes out .i have tested vs and va voltages (with x and y boards disconnected)and both voltages just fall to zero.it looks as if someone has replaced the caps but the soldering looks poor.i have tested with esr meter and all caps look ok.

[shaunbt123]

Re: philips 50pfp5532d/05 dead with red light

i have been looking at the powerboard and found what looks like there has been some burning on the board,also the cap which i have marked should be a 820uf but when measured (desoldered from board) is only 480uf with esr of 13 ohm.could this be the cause of the dead power supply.
thanks for your help.

[tom66]

Re: philips 50pfp5532d/05 dead with red light

That looks like heat discolouration which isn't necessarily a fault but that capacitor is not flush to the board? Has it bulged? Yes with that high ESR it could easily cause your fault!

[shaunbt123]

Re: philips 50pfp5532d/05 dead with red light

thanks tom for the reply ,the cap is removed from the board on the picture.i just left it there for the picture.could this cap alone cause the loss on voltage on the psu.

[tom66]

Re: philips 50pfp5532d/05 dead with red light

Yes.

[shaunbt123]

Re: philips 50pfp5532d/05 dead with red light

sorry tom, my mistake the esr was 0.13 ohms, the cap is rated at 100v 820uf but the esr meter is only saying 497uf.
thanks again for the help tom.