I have lg 55uj6200, when plugged in its in standby to turn on you have press power button multiple time then it flashes 3 times and turns on but no video(flash light test) no backlights no sound.
Powers supply
Stby pwr on
13.5v 12.5v 13.2v
Pwr on 3.5v 3.5v
Pdim .47v .47v
Inv on 0v 0.05v
If i force power supply turn inverter on backlights work no video.
Is it possible trbl shoot backlight inv on circuit on main board or is this case bad bga chip or mainboard?...
microvibe
Badcaps Veteran
Last Activity: 03-03-2021, 07:12 PM
Joined: 03-04-2013
Location: steinbach,mb
-
LG 55uj6200 wont turn on
-
Re: Toshiba 40ft1u blows fuse
I found. A match for vs 101 I installed it. Put in a new fuse and the TV's working fine. Thanks for your guys's help. Much appreciated -
Re: Toshiba 40ft1u blows fuse
If I connect a light bulb across the fuse. Can I test the TV with vs. 101 removed? Or does that littelfuse need to be there? I can't find anything matching on the boards I have here.Leave a comment:
-
Re: Toshiba 40ft1u blows fuse
No short on the rectifier after I lift one leg. Vs101. J105 resistor show short or is it just very low resistance?Leave a comment:
-
Re: Toshiba 40ft1u blows fuse
Vs101 is 0 the rest ill check tomorrowLeave a comment:
-
Re: Toshiba 40ft1u blows fuse
I have the other boards disconnected. Still blows up fuse instantly. So the short has to be on the coldside I'm not sure where to start testing and what the values or for things. The green disc beside the power connector Is that supposed to show closed Or have some resistance. ?Leave a comment:
-
Toshiba 40ft1u blows fuse
I have a Toshiba 40 FT1 U. It was hit with a power surge. And the fuse blew. When I install a new fuse and plug it in and it blows instantly. I can't find any shorts on the mosfet or Bridge rectifier Maybe someone can take a look at the power board And has an idea where to test for shorts.... -
Panasonic Th-42px75u top half white washed
I have a th-41pc75u top half screen washed out can see menu etc vaguely in the whitewashed top half and fine in bottom half. Tv shuts off after few seconds 7 blinks. I disconnected one of the panel ribbons for top half tv will stay on still white washed except for the disconnected ribbon thats black. I tested the su board but cant find a short maybe tested wrong. In the sc board i did notice the white ceramic 2.2k ohm is burnt would this cause this issue or is it still buffer issue.... -
Re: Westinghouse wg55ur4100 no response
These are only numbers i find on board...Leave a comment:
-
Re: Westinghouse wg55ur4100 no response
Cv838h-b-11-170818 is the numberLeave a comment:
-
Re: Philips 55pfl5505d/f7 blinking light
Secondaries were within 3% of each other.Leave a comment:
-
Re: Westinghouse wg55ur4100 no response
Would main board from50" work or one from 55" element?Leave a comment:
-
Re: Philips 55pfl5505d/f7 blinking light
I tested them the way you show all secondary same reading, 2 transformers have shorted primary and 2 are open the rest are .594, secindarys were 1.643Leave a comment:
-
Re: Philips 55pfl5505d/f7 blinking light
I have 8 of these transformers. If i am testing them right 5 out of the 8 have at least one secondary winding open. Is that even possible and backlights still come on? I know each tube was being lit up....Leave a comment:
-
Re: Westinghouse wg55ur4100 no response
Cant seem to find replacement main board, be nice if these main boards could be repaired.Leave a comment:
-
Re: Westinghouse wg55ur4100 no response
Jumping all 3 to stby worked for backlights. So guess need find main board unless possible to trace where issue on main is.Leave a comment:
-
Re: Westinghouse wg55ur4100 no response
Ill try jumping all 3 to stby. I did unhook main.Leave a comment:
-
Re: Philips 55pfl5505d/f7 blinking light
Wouldnt video be produced before or same time the backlights come on. Backlights stay on few seconds never a logo or picture.Leave a comment:
-
Re: Westinghouse wg55ur4100 no response
Jumped bl on still no backlights. The led connector showing 3.5v on led1+ thats it. I cant find a 12v supply on tcon ethierLeave a comment:
-
Re: Westinghouse wg55ur4100 no response
No backlights doing what says in post 2Leave a comment:
No activity results to display
Leave a comment: