Forum: Troubleshooting TVs and Video Sources
11-28-2021, 06:50 PM
|
|
Replies: 19
Views: 1,388
Re: Samsung un49mu7000f dead no power
Sorry
No I did not.
I’ve had a difficult time finding software for the ch341 programmer.
I think I’m going to try and find a pre programmed chip to install or purchase another main board.
Not...
|
|
Forum: Troubleshooting TVs and Video Sources
10-26-2021, 12:26 PM
|
|
Replies: 19
Views: 1,388
|
|
Forum: Troubleshooting TVs and Video Sources
10-26-2021, 12:10 PM
|
|
Replies: 19
Views: 1,388
|
|
Forum: Troubleshooting TVs and Video Sources
10-26-2021, 10:21 AM
|
|
Replies: 19
Views: 1,388
Re: Samsung un49mu7000f dead no power
Hi,
I did find it!
Thanks for the photo.
Do you know if this ic can be purchased pre flashed and ready to install?
I don’t have a programmer
Thank you for all of your help
|
|
Forum: Troubleshooting TVs and Video Sources
10-26-2021, 10:15 AM
|
|
Replies: 19
Views: 1,388
|
|
Forum: Troubleshooting TVs and Video Sources
10-26-2021, 07:09 AM
|
|
Replies: 19
Views: 1,388
|
|
Forum: Troubleshooting TVs and Video Sources
10-26-2021, 04:29 AM
|
|
Replies: 2
Views: 415
Re: LG 55UN6955ZUF. Help
Hi,
I have tried unplugging each side individually.
Made no difference.
Same result .No video
Thanks
|
|
Forum: Troubleshooting TVs and Video Sources
10-25-2021, 02:41 PM
|
|
Replies: 2
Views: 415
LG 55UN6955ZUF. Help
Hi
I recently acquired an LG55 UN6955ZUF
When I cycle it on it has backlights and audio.
No video just the light blue hue of the backlights.
I’ve replaced the main board hoping it would take...
|
|
Forum: Troubleshooting TVs and Video Sources
10-16-2021, 04:49 AM
|
|
Replies: 19
Views: 1,388
|
|
Forum: Troubleshooting TVs and Video Sources
10-12-2021, 05:55 PM
|
|
Replies: 19
Views: 1,388
Re: Samsung un49mu7000f dead no power
Hi,
I have replaced the main board with 2 different replacement boards from TV PARTS TODAY and also replaced the power supply board once with no change.
(Am I getting defective boards from TVPARTS...
|
|
Forum: Troubleshooting TVs and Video Sources
10-08-2021, 06:42 AM
|
|
Replies: 19
Views: 1,388
Samsung un49mu7000f dead no power
Hi.
I’m working on a Samsung UN49MU7000F that has no standby LED indicator.
No POWER
The power supply board is part number BN44-00876A
The main board number is BN94-12399A
I am stuck.
I have...
|
|
Forum: Troubleshooting TVs and Video Sources
10-07-2021, 07:14 AM
|
|
Replies: 0
Views: 319
Samsung un49mu7000f help needed
Hi.
I’m working on a Samsung UN49MU7000F that has no standby LED indicator.
No POWER
The power supply board is part number BN44-00876A
The main board number is BN94-12399A
I am stuck.
I have...
|
|
Forum: Troubleshooting TVs and Video Sources
04-03-2021, 06:16 PM
|
|
Replies: 8
Views: 637
Re: Samsung un58j5190 part identification
Hi,
Thanks for responding.
I have replaced the backlights but, need assistance in identifying MOSFETS Qm801/802CS
The MOSFETS were damaged so severely that I’m unable to identify the markings on...
|
|
Forum: Troubleshooting TVs and Video Sources
04-03-2021, 12:34 PM
|
|
Replies: 8
Views: 637
Re: Samsung un58j5190 part identification
Hi
Thanks again!
My power supply board is BN44000787A.
Dimensionally the 50R380 is the correct size 60mm x 65mm. My board uses this Mofset in location QS101C. (50R380)
Could this MOSFET also...
|
|
Forum: Troubleshooting TVs and Video Sources
04-03-2021, 10:52 AM
|
|
Replies: 22
Views: 1,760
|
|
Forum: Troubleshooting TVs and Video Sources
04-03-2021, 10:41 AM
|
|
Replies: 8
Views: 637
Re: Samsung un58j5190 part identification
Hi,
Thanks
I did read that post regarding that part number.
Samsung uses that same location part number in many different series sets.( I think that part number is from a different Samsung TV.
...
|
|
Forum: Troubleshooting TVs and Video Sources
04-03-2021, 07:39 AM
|
|
Replies: 8
Views: 637
Samsung un58j5190 part identification
Hi,
I have a Samsung UN58J5190 that I need help identifying a couple of MOSFETS on.
Their location on the power supply board (BN4400787) is QM801CS and QM802CS.
The parts on my board are to burnt...
|
|
Forum: Troubleshooting TVs and Video Sources
01-29-2020, 04:54 PM
|
|
Replies: 2
Views: 744
|
|
Forum: Troubleshooting TVs and Video Sources
12-13-2019, 11:16 AM
|
|
Replies: 4
Views: 1,114
Re: Sony Mainboard Repair
Yes this is an android based system.
It was Diagnosed by a repair center in Tucson who explained that they thought it was the main processor.
Their term was a corrupted processor.
They were...
|
|
Forum: Troubleshooting TVs and Video Sources
12-12-2019, 08:47 AM
|
|
Replies: 4
Views: 1,114
Sony Mainboard Repair
Hi,
Does anyone out there that know of a tv repair service that can supply and replace the processor in a Sony main board?
Model # KDL-75W850C
Main board A2071514A. BMX
I have had no luck in...
|
|
Forum: Troubleshooting TVs and Video Sources
12-10-2019, 08:32 PM
|
|
Replies: 10
Views: 3,513
|
|
Forum: Troubleshooting TVs and Video Sources
07-09-2019, 06:45 PM
|
|
Replies: 17
Views: 1,706
|
|
Forum: Troubleshooting TVs and Video Sources
07-08-2019, 07:44 PM
|
|
Replies: 9
Views: 1,955
Re: Kdl-75w850c
Hi,
I have a 75 inch Sony with the same error code. (6 blinks)
Pretty sure that the issue is defective leds in backlight.
I had spare boards that I swapped out with no success.
My next step is to...
|
|
Forum: Troubleshooting TVs and Video Sources
07-08-2019, 07:39 PM
|
|
Replies: 3
Views: 736
|
|
Forum: Troubleshooting TVs and Video Sources
07-05-2019, 08:06 PM
|
|
Replies: 3
Views: 736
insignia ns-50d550na15
Hello All!
Would anyone have a schematic/service manual for an insignia ns-50d550na15 ?
I have some wires detached from the infrared sensor plug and need to identify their locations to reattach.
...
|
