Re: Samsung 231T, recapped, no power, no lights

Selldoor - Don't know how I missed Bluto's 4A info.

Bluto -Thank you for your most kind offer. However >

I have already bought on eBay (giorgio11185, China), package deal for 8 only of each, including delivery (8 of each to have some spares!)

10PCS AO4600 4600 SOP8 POWER MOSFET TRANSISTORS
Item number:390349008895 Sale price:US$5.00

10Pcs Littelfuse SMD 0603 4A 4 Amp Fuse
Item number:250896762299 Sale price:US$4.00

When I'm finished, if there are any...

Re: Samsung 231T, recapped, no power, no lights

Hi Bluto.

To reiterate, (I have read your thread)
I have replaced the 6 caps on the PSB & 4 on the inverter board

I have now identified the 4 shorted MOSFETS U52 & U54, U101 & U105
& could buy some (obsolete) AO4600s off of eBay. Please advise if I should use a better, newer equivalent MOSFET. I note AO4619 (which you used) & AO4622 are listed as replacements, but even those seem obsolete / unavailable now! Am in UK.
As for my ability to (un/)solder them, time will tell....

Re: Samsung 231T, recapped, no power, no lights

Those PS fuses are OK. 0 Ohm

However re-reading my initial post I should have clarified I was referring to the SMD fuses F51 & F101 that protect the FETs. Both appear open circuit

I have tested the 8 FETs

U52 & U54, U101 & U105 are short circuit
(The 4 furthest from the connector)

Re: Samsung 231T, recapped, no power, no lights

The original post in this thread starts

Samsung 231T, recapped, no power, no lights
My search shows no successful repairs on this particular Samsung 213T Syncmaster LCD model....

Mine is a 213T. I just assumed KINGOFCOINS had made the typo.
It appears to me that all the follow on posts are in reference to 213T not 231T.
[His images are for a 213T. I know nothing of a 231T]
I assumed everyone else also assumed he meant a 213T not a 231T & ignored the supposed typo.

Re: Samsung 231T, recapped, no power, no lights

I didn't upload pictures as they would have been the same as in post #11. But can if it would help.

The fault. I did say - Have replaced the 10 caps, but still no more than correct functioning of the green power LED.
I am prone to brevity. After the hols, I switched on the 213T (used to monitor emails on a twin monitor setup) to be greeted by a dark screen. However the green power LED functions OK. No difference after replacing the caps.

I have read all the posts in all 3 threads that contain 213T....

Re: Samsung 231T, recapped, no power, no lights

Hi all - great forum.

Have replaced the 10 caps, but still no more than correct functioning of the green power LED.

Couple of questions.
What are the values for the fuses?
Can I test the FETs with the new caps installed?