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I would suggest changing them anyway, to get us a baseline. There is no worry about using non low-esr capacitors there, just match the capacitance and ensure voltage is more than or equal to the original rating.
Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
ok change the caps CM808-13.1v,CM804-13.1v and CP809-11.12V now don't want to sound stupid but am I suppose to get shock when I touch on top of those small caps ?
CP809
The section you are working on is the HOT side, so do not touch anything with your hands, deadly section.
To be safe, you should plug the TV into GFCI outlet or use isolation transformer.
if I remember correctly, the voltage on CM804 was 20v or more.
QB801, Zener diode (15v) ZB801 tested OK?
OK, take the reistance reading of the PFC controller IC UP801S between pin 8 (VCC) and the Ground pin 6, take the reading both ways (reverse the meter's leads after taking the first reading), report the reading, make sure to tell us if the meter is showing Ohm, K OHM, or M OHM.
Ok, that is not the cause of low voltage then. Something is loading down the power supply, the voltage at the Emitter of QB801 which feeds the VCC of the PFC IC should be about 15V, QB801 is setup as a 15V linear regulator. I have look at the diagram more to see what else you will have to test.
ok so I did some soldering on the power board and what u know the backlights are coming on now when I pull out the white connector but the TV still not powering up?
Hey, that is great! Which section that you re-solder? Also what DC voltage do you get at the big cap and at those test points so I can put the notes of the voltage readings in the diagram.
So do you get ps_on on the pin when all the connections are put back together?
ok well the backlights comes on some times now the TV actually turned on around twice when I put the connector back in after a while it switched on tried switching it of and on with the remote didn't come back on?
The 312V is very marginal for the inverter circuit to work properly. Do you have capacitor meter to check the capacitance of that large cap since if the PFC not working, I expect the voltage on the cap to be at 230V (your country line voltage) x 1.414 = 325V but with very poor regulation due to failed PFC.
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