Re: Phillips 47" Flickering CCFL

Sorry about that, Here it is and thanks in advance for any help....

Re: Phillips 47" Flickering CCFL

I'm not a photographer by any means, hopefully these are clear enough. If not I can try and take more, or zoom in more if need be. The solder doesn't looks so great on transformers, but that's how it was when I got it. They seem to do the job however. I do take responsibility for the not so great cap soldering though =P


Board Model#
KUBNKM133LA (Master)
KUBNKM133LB (Slave)...

Model - Phillips 47PFL432D/37

Someone gave me this TV the right side backlight flickers rapidly, the left side didn't come on at all. I popped it open and there is 2 seperate inverter boards. A slave(left side, when facing screen) and Master(right). Immediately I see 2 35v 680uF caps on either board. All 4 are horrendously blown. I replaced all 4 with new ones and the problem persisted. So I thought surely it was the CCFLs.

I decided just for the fun of it to swap the master and slave boards to the opposite sides. The problem followed the boards. The previously flickering...

Re: Viewsonic VX2433WM Identify Ceramic Cap



It belongs to my brother and he had someone replace all the electrolytic caps and when it still didn't work he brought it to me. Upon powering it on there was a loud hissing (sounds like a disk drive trying to read a disk almost) I pointed out the ceramics and found one of the 6 between lights and transformer(3 top, 3 bottom) was the culprit. The screen still works, but no back lights, ccfls work with a separate identical power source. The hissing capacitor "peaks" out and then backlights shut off and hissing...

After a few minutes I have tracked down a CCFL problem to a single ceramic disk cap. It's labeled 5 3kv SEC(picture attached) and I can't find this for the life of me. If anyone could possibly point me in the right direction to a replacement you'd be life savers. Thanks in advance for any help and your time....

Re: HP F1503 Backlight won't stay lit.

*epic face palm* My multimeter had an accident with a drunk group of nerds and a taser so to test the adapter I just used another I had of the same output. After reading your comment I thought well, I will just give it a shot. 3rd adapter same model and output as the first one I tested worked. Turns out I have 2 faulty adapters... So much wasted time haha thanks for the help everyone. I appreciate.

Re: HP F1503 Backlight won't stay lit.

I appreciate the quick response. I gave it a try, removed all solder from them, replaced with some 60/40 rosin core and same thing still happening

**EDIT** I've read the glue on the Toroids(on other models) is known to eat through traces. Is that a known problem for these?

I bought this smaller monitor for $2 hoping to use it as a dual display. It worked for all of 5 minutes then the screen went off, but monitor stayed powered on. No standby etc. Held my phone's light up to it and the screen is still on just no back light. If you shut the monitor off then back on they light up again but almost immediately shut back off. This also happens if you change the monitor's resolution. You see the screen for about 1 second and then back to no light.

I was hoping a capacitor just blew on the inverter, but they look fine to me. I'm very new at electronics and...