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Search: Posts Made By: dskall
Forum: Troubleshooting TVs and Video Sources 07-04-2022, 10:09 AM
Replies: 29
Views: 538
Posted By dskall
Re: Sony KD-55X8505 not able to start

Have you watched any of Nick's TV Repair videos? He has a few on sony.
Forum: Troubleshooting TVs and Video Sources 07-02-2022, 11:16 AM
Replies: 28
Views: 294
Posted By dskall
Re: Small RCA TV white screen

In your case power supply is 12v. So to run backlight's and such the transformer is boosting voltage.
I'm confused. Resistors where bad? You then replaced with wrong value. Then put old ones back...
Forum: Troubleshooting TVs and Video Sources 07-02-2022, 11:09 AM
Replies: 42
Views: 773
Posted By dskall
Re: Sharp LC70LE747 Flickering - darkening gradually to the right side

Seems like a bad eemc or memory. If you have a programmer that can output print information during boot up. Maybe only way to solve this.
Forum: Troubleshooting TVs and Video Sources 07-01-2022, 05:32 PM
Replies: 9
Views: 89
Posted By dskall
Re: Sony XBR-65X850E power supply board diode replacement

What are the numbers on them? All 5150?
Forum: Troubleshooting TVs and Video Sources 07-01-2022, 11:25 AM
Replies: 15
Views: 170
Posted By dskall
Re: TCL 40S325-CA backlights, sound, no picture

Probably need to inspect panel traces for short. And look at side cofs. If panel short you can jumper around it
Forum: Troubleshooting TVs and Video Sources 07-01-2022, 09:39 AM
Replies: 15
Views: 170
Posted By dskall
Re: TCL 40S325-CA backlights, sound, no picture

Might try unhooking one side of panel board and see if voltages come up. Some good pictures of panel boards would help.
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 10:26 PM
Replies: 15
Views: 170
Posted By dskall
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 09:48 PM
Replies: 28
Views: 294
Posted By dskall
Re: Small RCA TV white screen

I didn't say the circuit is good. Just looks like controller isn't damaged. And I did misread frequency on datasheet.
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 08:10 PM
Replies: 28
Views: 294
Posted By dskall
Re: Small RCA TV white screen

Your controller chip is probably ok. The resistors you replaced are probably current sense and are a different problem. If you ohmed the originals and they were 1.5 ohms then I would put them back...
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 05:04 PM
Replies: 12
Views: 134
Posted By dskall
Re: Panasonic TX-L32E5E doesnt turn on.

Do you have data sheet for IC4101. Looks like processor enables it. Maybe heat up processor and try and turn tv on.
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 03:22 PM
Replies: 12
Views: 134
Posted By dskall
Re: Panasonic TX-L32E5E doesnt turn on.

Does your led come on in standby? Does it blink when you operate remote?
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 12:51 PM
Replies: 12
Views: 134
Posted By dskall
Re: Panasonic TX-L32E5E doesnt turn on.

Is your processor chip intact?
Forum: Troubleshooting TVs and Video Sources 06-30-2022, 11:45 AM
Replies: 12
Views: 134
Posted By dskall
Re: Panasonic TX-L32E5E doesnt turn on.

Some good pictures of boards and connectors would help.
Forum: Troubleshooting TVs and Video Sources 06-29-2022, 10:48 PM
Replies: 7
Views: 466
Posted By dskall
Forum: Troubleshooting TVs and Video Sources 06-29-2022, 08:37 PM
Replies: 28
Views: 294
Posted By dskall
Re: Small RCA TV white screen

Good clear pictures of mainboard and t-con would help. Do you have voltage to t-con?
Forum: Troubleshooting TVs and Video Sources 06-29-2022, 02:17 PM
Replies: 28
Views: 294
Posted By dskall
Re: Small RCA TV white screen

I guess you can start by testing voltages and posting model.
Forum: Troubleshooting TVs and Video Sources 06-26-2022, 07:08 PM
Replies: 6
Views: 274
Posted By dskall
Re: Seiki SE42UMT, Standby Light, No power On

I would start unplugging things on the power board until high pitch sound stops and then narrow down which board is loading power supply.
Forum: Troubleshooting TVs and Video Sources 06-26-2022, 10:09 AM
Replies: 7
Views: 207
Posted By dskall
Re: Bn44-00623B pfc mosfet very hot

I would have to think one of the components on gate drive or CS is out of spec. Not allowing fet to completely turn off and on. You do have to isolate your ground to check gate drive with...
Forum: Troubleshooting TVs and Video Sources 06-26-2022, 10:05 AM
Replies: 5
Views: 215
Posted By dskall
Re: LG 47LN5400 Replacement backlights

We're at the mercy of China for pretty much all replacement parts. They all come from the same place.
Forum: Troubleshooting TVs and Video Sources 06-26-2022, 09:59 AM
Replies: 7
Views: 207
Posted By dskall
Re: Mi TV 4 Pro-Samsung Panel LSC550FN20 - Video problem, backlight and Audio works f

Looks like a short or bad panel. Check all the little brown caps on panel board and t-con for shorts.
Forum: Troubleshooting TVs and Video Sources 06-25-2022, 03:50 PM
Replies: 7
Views: 207
Posted By dskall
Re: Bn44-00623B pfc mosfet very hot

Do you have an oscilloscope to check gate drive is turning gate off?
Forum: Troubleshooting TVs and Video Sources 06-22-2022, 06:14 PM
Replies: 17
Views: 376
Posted By dskall
Re: Samsung UE49KS7000SXXH - No standby light

I would check output diodes.
Forum: Troubleshooting TVs and Video Sources 06-22-2022, 09:32 AM
Replies: 29
Views: 538
Posted By dskall
Re: Sony KD-55X8505 not able to start

So what is ps-on, bl-on? Did you heat up processor?
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 03:03 PM
Replies: 9
Views: 223
Posted By dskall
Re: samsung le37c630k1w standby lights but no power on

Looks like you may have a mainboard problem.
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 09:48 AM
Replies: 6
Views: 230
Posted By dskall
Re: Samsung HG46EC890XB LED 5x blinks

Do you get a ps-on signal?
Showing results 1 to 25 of 500

 
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