Re: Kdl-70w830b sim in middle of picture after backlight repair
Replaced power supply and mainboard and the same issue persists. Maybe i replaced the led driver board with another faulty one?
Pooshoes
New Member
Last Activity: 09-29-2024, 11:43 PM
Joined: 03-05-2022
Location: Edmonton
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Re: Kdl-70w830b sim in middle of picture after backlight repair
I have the same issue with a kdl-70w840 tv but it had a BL error blink code so i bypassed it and had bright edges like you. I replaced lights with new strips and no improvement. I replaced the LED driver board with no improvement. Unplugged Tcon and no improvement in LED output. So power supply or mainboard error is the culprit. Did you happen to solve your problem? @jeffer76...Last edited by Pooshoes; 09-26-2023, 08:09 AM.Leave a comment:
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Re: Samsung QLED Q60R constant reboot issue
I had the same issue with my set, 55" QN55Q6DRAFXZC. It would show the samsung logo and reboot. In my experience with bad panels if the LCD had an internal short usually it wouldn't display a logo so i suspected something else was up. I whipped out the thermal camera and discovered d001 was getting toasty (140c+) and under the microscope you could see factory flux black and bubling out from under the chip. Simply knocked off the diode pack with a blob of solder on my iron and TV is back to 100%.
Diode number is 42...Leave a comment:
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Re: samsung un50tu8000 and un70yu7000 displays shorted
This guy shows us one way to do it. [url]https://youtu.be/atNmhu7HMj0[/url]Re: samsung un50tu8000 and un70yu700...mhu7HMj0[/url]...Leave a comment:
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Re: Rca rhos651sm and rhos581sm
I'm in the same boat, same symptoms with lines on startup and slowly fading to black. No burns on CoF, no shorts, Vgh and Vgl look fine. Certainly a panel short, just wondering if it's possibe to repair. Maybe we cam find the shorted line and burn off the short with some high voltage?
Thanks!...Last edited by Pooshoes; 11-21-2022, 12:20 AM.Leave a comment:
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Re: Vizio M60-C3 won't turn on. Is it the main board?
Visio's certainly have issues with the BGA chips, I figure the solder they use grows tin whiskers. Reflow the chip and once it's working turn off "quick start" and the processor won't run hot 100% of the time, just takes longer to boot the panel.Leave a comment:
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Re: Samsung UN65NU6900F - Sound and backlight but no picture
Did you end up finding a solution? I have the same model that is giving me trouble. I try blocking pins but can't find the right ones to cancel the error and allow the voltages to make it to the panel to turn on the screen. These ribbons have a different wiring than the usual fat ribbons for which I have a pinout for.
With the screen ribbons disconnected all voltages check out fine on the mainboard (I might be able to help you out if you need some information what shows up where) but I can measure my 3.3V...Leave a comment:
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Re: Samsung UN55MU6290 - No Power, No Standby Light
Hi @BruceTV. I have a similar problem on a samsung panel. Have you ever documented which caps are going bad? I have been searching for bad caps with no luck on mine but did find a couple shorted resistors. model i this case is the UN65RU8200F but same problem.
Thanks!...Leave a comment:
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Re: New Members - please post your introductions here
Hello, Kyle From Canada. I started fixing electronics a couple of months ago to pass the time and now i'm 30 projects deep with only about half finished. Hoping to get into some good knowledge here to get through a few of the complex ones.Leave a comment:
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