Samsung 930B re-capped, no backlight

[jamenlang]

Re: Samsung 930B re-capped, no backlight

I wasn't able to get a single value using the 200 ohm setting measuring U202 and U203

[budm]

Re: Samsung 930B re-capped, no backlight

By the way, did you check these two DC blocking caps for leakage? If you can read resistance, it can damage the MOSFET's. The inverter output is half-bridge designed.

[jamenlang]

Re: Samsung 930B re-capped, no backlight

By the way, did you check these two DC blocking caps for leakage? If you can read resistance, it can damage the MOSFET's. The inverter output is half-bridge designed.

from that picture, the one on the left i got a resistance reading of 200K ohm, the one on the right didn't have a value.

[jamenlang]

Re: Samsung 930B re-capped, no backlight

I measured the 13v and 5.1v pins on CN2. the 5.1v is perfect, the 13v measures 17.5v.

[jamenlang]

Re: Samsung 930B re-capped, no backlight

By the way, did you check these two DC blocking caps for leakage? If you can read resistance, it can damage the MOSFET's. The inverter output is half-bridge designed.

do you happen to know what μf those caps are by chance? or have a suitable PN for replacement?

[budm]

Re: Samsung 930B re-capped, no backlight

Sorry, I do not know the value of those two caps.