handsworth
Senior Member
Last Activity: Yesterday, 03:12 PM
Joined: 10-05-2015
Location: Cleveland, Ohio
-
It was the power supply. I bought a repair kit from ShopJimmy ( $38) which included the main board, PSU and T con. 1st tv fired right up and stayed on. I put the original MB back in and tv turned on and everything is ok. I repeated this on the 2nd tv and the results were the same. Unfortunately, the second screen had a vertical line down the right side. So out of 2 free tvs, I got one to work for 38 bucks. -
yes I didLeave a comment:
-
So I tried to get the backlights to turn on by jumping the 2 pins with a 1kR. The P_ON and the Bl_ON pins are charted on the back of the Mb. When turned on, the logo screen appears for 15 seconds (I timed it) and then the backlights go out. No backlights but sound and image still present. I also think the problem is with the main board not sending the signal after initial startup. There are a few MB on Ebay for less than $25, so I'll try one....Leave a comment:
-
The PS is the same but the MB are different. As of now, both tvs are at initial setup like right out the box. No backlights but both tvs have sound and image....
Leave a comment:
-
TCL 43S431 Backlight issue or Power Supply
I was wondering if anyone else has come across this problem. What was the problem?, and was it solved. I recently picked up 2 of these tvs and both initially diagnosed as bad backlights. When turned on, the backlights flash the red logo screen. Sound and an image is clear using a flashlight. So I buy 2 sets of leds. When they arrive I take one tv apart and test the leds before removing them. OMG they all work. but I put the new ones in anyway. So I think its the power supply. I swap PS from one to the other and same results. Now here is the issue and really confused me. I reset the tv using... -
Leave a comment:
-
Samsung UN65NU8000F No Picture
Picked this tv up off the curb in excellent condition but its in reboot loop. Im not a tech so I dont understand all the technical talk. I have done all the common things like disconnecting the main cable and the lights stay on. Removing lvds cables one at a time produces nothing but the constant reboot loop. I would like to try the jumper thing but can someone show me exactly which two poles to jumper? TIALast edited by handsworth; 07-31-2024, 09:42 PM. -
Would help to know full model # as we dont know what size tv you have. Also pictures of the boards are extremely helpful too....Leave a comment:
-
Service menu : on remote press MUTE... 182....POWER....Leave a comment:
-
That would depend on how deep the scratch is. This tip was told to me, Spray a little WD-40 in the scratch and let it sit for a minute or so. Rub it out with a micro soft cloth. Sometimes it works and sometimes not.Leave a comment:
-
Thanks. I picked this one up today off the curb. Plugged it up and immediately thought Tcon. Had same symptoms as yours. ( blank screen ). Had good tcon leftover from 55S405. Tv works....Leave a comment:
-
Disconnect leds from power supply and test leds with led tester.Leave a comment:
-
Would you believe this happened to me today. Sold a 60" tv and the people show up in a Toyota Corrola. Thank God they lived not even 2 miles from me. I took it home for them in my truck....Leave a comment:
-
I hear what your're saying but TRANSPORTING safely is their problem, unless you are a licensed insured shop, which I am not. I've sold 55" tvs to people who try to get it home in a mid size chevy. Should I be responsible for that?...Leave a comment:
-
I always show tv works and screen is good as I mainly do backlight replacements. Customer loads tv by their self or with the help they bring. No problems here as I wont touch it after payment.Leave a comment:
-
Before you take screen out, unplug cable from power supply and main board. Power up and see if lights come on and stay lit. Your leds may be good. I have been thru many Samsung KU, JU and TU models. Its a bad panel that mostly causes this constant reboot.Leave a comment:
-
Re: Samsung TU8000, backlight and sound on, stuck in blue screen
Try these. A member here named Lotas posted it some time ago and it worked. Got great picture on half a screen. Was definitely a bad panel....Leave a comment:
-
Re: No backlight on Insignia NS-50DR710NA17, need help with voltages
Having the same problem with the same tv. Flashlight test shows a dim image. Was hard to tell voltage with the tester, so lets go for the backlights. Took the panel off which is glued to the inner bezel and tested the leds individually. My tv had 4 strips with 8 leds each. 1 led was out on 2 of the strips. Just ordered new leds. They about $60Leave a comment:
-
Re: Samsung UE55MU6120K Boot loop with backlight no video
I have 2 of these MU models and your placements worked for me. Definitefly bad screens. Was hoping to light it up and verify the main boards still worked. Cudos to you...Leave a comment:
-
Re: Samsung un65h6203af led replacement question
The single leds that you spend time replacing, will only buy time. The ones you dont replace have aged and will go out soon after. I suspect that tv is a 2015 or 16 model. Glad you bought new ones.Leave a comment:
No activity results to display
Leave a comment: