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Search: Posts Made By: neilc6
Forum: Troubleshooting TVs and Video Sources 12-07-2019, 06:20 PM
Replies: 23
Views: 321
Posted By neilc6
Re: LG 65UH5500-UA Backlight flash on first power up only

You may still have an LED or two failing at higher current. Can you measure the LED output voltages with the backlights forced on since a lower voltage on one string would indicate a short on that...
Forum: Troubleshooting TVs and Video Sources 12-06-2019, 02:53 PM
Replies: 15
Views: 311
Posted By neilc6
Re: Vizio M65-C1 No Power

Vizio M Series have BGA issues on main boards. Symptom is usually no BL-ON (ON/OFF) signal from processor. https://www.badcaps.net/forum/showthread.php?t=80093

But here
CN9101...
Forum: Troubleshooting TVs and Video Sources 12-06-2019, 11:55 AM
Replies: 3
Views: 90
Posted By neilc6
Re: LG 55 UF6450-AU tv no audio,Flickering screen intermittent, not turning on.

Yes it sounds like you have bad backlights. The led controller can detect under and over voltage conditions caused by shorted or open LEDs and shut down the backlight. Was just checking out this...
Forum: Troubleshooting TVs and Video Sources 12-03-2019, 02:19 PM
Replies: 4
Views: 142
Posted By neilc6
Re: LG Korean message

Did you make sure you plugged in all the connectors back into the main board. You may have missed one. Is there a multi-way toggle switch? Try pressing that. Factory reset is done with a factory...
Forum: Troubleshooting TVs and Video Sources 12-02-2019, 04:56 PM
Replies: 44
Views: 380
Posted By neilc6
Re: Sony KDL-46ex520

F6001 is below the silkscreen. F6002 and F6003 have arrows pointing to them.
Forum: Troubleshooting TVs and Video Sources 12-01-2019, 03:28 PM
Replies: 44
Views: 380
Posted By neilc6
Re: Sony KDL-46ex520

Check for blown fuses on the main board.

https://www.badcaps.net/forum/showthread.php?t=66995
Forum: Troubleshooting TVs and Video Sources 12-01-2019, 10:19 AM
Replies: 44
Views: 380
Posted By neilc6
Re: Sony KDL-46ex520

The 12V for the tcon is generated on the power supply board and switched through the main board. You should give a more general description of the problem you are trying to fix and pics of the...
Forum: Troubleshooting TVs and Video Sources 11-29-2019, 06:55 PM
Replies: 7
Views: 169
Posted By neilc6
Re: LG 32LC7D No Backlight

Fixed with a new main board. Found one for $18 but will break even selling the TV after capacitor replacement.
Forum: Troubleshooting TVs and Video Sources 11-29-2019, 06:54 PM
Replies: 10
Views: 592
Posted By neilc6
Re: Samsung un50H6350

You can try blocking some pins on the ribbon connector on the bad side.

https://www.badcaps.net/forum/showthread.php?t=50646
Forum: Troubleshooting TVs and Video Sources 11-27-2019, 02:06 AM
Replies: 14
Views: 286
Posted By neilc6
Re: Sony KDL-50W800C

Disconnect one side of the ribbon cables at a time and try powering on. If one side shows a picture, there is a panel fault on the side that doesn't power up.
Forum: Troubleshooting TVs and Video Sources 11-27-2019, 02:04 AM
Replies: 4
Views: 291
Posted By neilc6
Re: Tcl 55S405 bad T-con?

Solid lines are usually panel problems and not the tcon.
Forum: Troubleshooting TVs and Video Sources 11-22-2019, 09:03 PM
Replies: 14
Views: 286
Posted By neilc6
Re: Sony KDL-50W800C

Check for shorted caps on the panel boards. Probably no tcon on this model.

https://www.badcaps.net/forum/showthread.php?t=68594&highlight=40w600b
Forum: Troubleshooting TVs and Video Sources 11-21-2019, 11:53 PM
Replies: 7
Views: 169
Posted By neilc6
Re: LG 32LC7D No Backlight

Cut the I-C wire and put a 1K resistor from ON/OFF to I-C. Front led flashes green and goes steady as before and backlights come on but no video. At least this confirms the inverter, power supply...
Forum: Troubleshooting TVs and Video Sources 11-21-2019, 04:41 PM
Replies: 7
Views: 169
Posted By neilc6
Re: LG 32LC7D No Backlight

Thanks capleaker. I-C is marked INV ON/OFF on the main board and is probably active high. Most likely bad bga connections on the cpu. TV is only worth $40 and a new main is $20 and it needs $10...
Forum: Troubleshooting TVs and Video Sources 11-21-2019, 04:37 PM
Replies: 4
Views: 126
Posted By neilc6
Re: Vizio M65-C1 No Picture, Backlight or Sound, External LED Working

ON/OFF is the backlight on signal and not going high. Bad main board.
Forum: Troubleshooting TVs and Video Sources 11-20-2019, 04:30 PM
Replies: 7
Views: 169
Posted By neilc6
LG 32LC7D No Backlight

I repaired this model before with capacitor replacement but this one has a different power supply. I found one bulged 1000uF cap which I replaced.

TV powers on, flashing front green led goes...
Forum: Troubleshooting TVs and Video Sources 11-20-2019, 10:21 AM
Replies: 8
Views: 109
Posted By neilc6
Re: Samsung UA50f Backlight problem

Check if you have good continuity through the connector. You may also have bad backlights.

https://www.badcaps.net/forum/showthread.php?t=72299
Forum: Troubleshooting TVs and Video Sources 11-19-2019, 09:35 AM
Replies: 41
Views: 496
Posted By neilc6
Re: SMPS schematic for Samsung UN46EH5000?

Samsungs do not have protection shutdown on the power supplies and the leds will continue to fail until they all short out, there is an open in the string, or the power supply is damaged. I would...
Forum: Troubleshooting TVs and Video Sources 11-17-2019, 09:46 AM
Replies: 3
Views: 97
Posted By neilc6
Re: Haier 49UF2500

Just repaired a 55UFC2500. Curved but panel is actually flat and flexed to fit in the curved chassis. Had one LED open. You need to keep the picture mode to Energy Saving (50%). Vivid is 100% and...
Forum: Troubleshooting TVs and Video Sources 11-16-2019, 11:08 AM
Replies: 18
Views: 301
Posted By neilc6
Re: LG 55LA6200 Back light strips

If the standoffs are broken off or missing, the diffusers can sit too close to the lenses as well.
Forum: Troubleshooting TVs and Video Sources 11-14-2019, 05:43 PM
Replies: 2
Views: 59
Posted By neilc6
Re: Samsung UE40ES5700SXZG (Edge LED) - Replacing only one LED bar

I do it find odd that only one side typically has damaged LEDs in these ES models. I would get NEW strips from China and replace both of them. Used ones may have wear and may fail in the future. ...
Forum: Troubleshooting TVs and Video Sources 11-13-2019, 06:10 AM
Replies: 4
Views: 88
Posted By neilc6
Re: LG 6V LED Backlights

I recall only the 32 inch models being 6V. Larger sizes may only be 3V. I will need to check later with some strips I may still have. You may be using the wrong replacement LEDs.
Forum: Troubleshooting TVs and Video Sources 11-13-2019, 04:52 AM
Replies: 4
Views: 88
Posted By neilc6
Re: LG 6V LED Backlights

Bright spots are caused by the lenses not being perfectly centered. If you use 5 second fix, you can adjust with the backlight on and cure it after. I tend do do full strip replacement on these...
Forum: Troubleshooting TVs and Video Sources 11-12-2019, 04:31 PM
Replies: 7
Views: 290
Posted By neilc6
Re: LG 49UJ6500 Blue Blacklights

Got a second LG in with blue backlights 43UJ6300. Popped off the lens this time and it appears there is a yellow filter (see this yellow in all previous LED backlights) that has crumbled away...
Forum: Troubleshooting TVs and Video Sources 11-11-2019, 12:43 PM
Replies: 12
Views: 199
Posted By neilc6
Re: Samsung UN46ES6100 / no backlight

The ES series are slim edge lit models and tricky to replace the backlights. First one I did, a 55", I damaged the panel in the corner by forcing the frame in place and it was probably not sitting...
Showing results 1 to 25 of 500

 
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