capacitor values for a Samsung t5054 plasma 50" y main board

[bobbygiammarco1988]

Have a Samsung t5054 and it doesn't turn on but powers on. There is a fuse blown on the board and someone put 25v capacitors on c5709 and C5300, luckily the fuse blew so it did no other damage but I need values in order to put new capacitors on. Third pic is the blown green fuse that will need to be replaced. Please help

[Alastair E]

Re: capacitor values for a Samsung t5054 plasma 50" y main board

Whats the number of the board.....

Ive got loads of boards, I could check for ya.

--From the pics, It Looks a bit like the one that commonly blows a load of IGBT's and fets.....

[bobbygiammarco1988]

Re: capacitor values for a Samsung t5054 plasma 50" y main board

LJ41-05120A its the Y main board and I did check those, they all seem to be okay

[Alastair E]

Re: capacitor values for a Samsung t5054 plasma 50" y main board

OK--Ive got one of those, Looks like it is the same one as I initially thought it was.

List the caps that are suspect and I can check against this board I have....

[tw2005]

Re: capacitor values for a Samsung t5054 plasma 50" y main board

Have a Samsung t5054 and it doesn't turn on but powers on. There is a fuse blown on the board and someone put 25v capacitors on c5709 and C5300, luckily the fuse blew so it did no other damage but I need values in order to put new capacitors on. Third pic is the blown green fuse that will need to be replaced. Please help

I guess you've checked the upper buffer for shorts and the rest of the ymain transistors like the 88N30W for shorts? This series is notoriously for Sound no picture, dead ymain and upper buffer. Also the PSUs can have issues with dry/cracked joints on the heatsinked fets.

[Alastair E]

Re: capacitor values for a Samsung t5054 plasma 50" y main board

5709 = 680uF, 25v 5300 = 680uf 25v So--Whoever changed 'em used the right voltage-rating and isnt your fault.
As TW says--Buffers are a problem with these sets, so are the power devices on this Y-SUS board.

When you finally get the thing working--Worth checking the tightness of the screws holding ALL the power devices to the heatsink. Ive found in every one Ive done, these slack and could hinder heat transfer away from the devices.....

[bobbygiammarco1988]

Re: capacitor values for a Samsung t5054 plasma 50" y main board

Thanks for the info, I soldered on new fuse f5700 which is a 1amp on y main board as well as those capacitors with new ones and no change. Fuse did not blow this time. I will now have to check voltages and transistors again. And yes I found these y buffers go the most.