Also, shouldn't the resistor that blew protect the IC?...
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I went to remove the other transistor and found something I missed. C8611 looks to be in bad shape. Could this be the reason the transistors blew?
Also, shouldn't the resistor that blew protect the IC?...Last edited by x_orange90_x; 07-23-2024, 02:57 PM.
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Is it possible the one with continuity between only drain and source caused the second one to fail, then subsequently the resistor that blew? What are the chances I have two bad transistors? I'm guessing pretty good IF something else caused them both to short, but what?
I think I'll remove the other suspect one and see if my replacement will stop having continuity. Maybe it's in a half open state or something? I don't know, electronics are weird 🥴...Last edited by x_orange90_x; 07-22-2024, 12:08 PM.
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Update: I am now worse off than when I started. 😮💨
A couple days ago I got my pack of resistors and decided since I had an excess of them, I would replace just that and give it a shot. As expected, the new one popped immediately upon plugging in the tv. So last night I replaced it again as well as a nearby transistor. The transistor had continuity between all 3 legs so I assumed it was completely shorted. The identical one next to it has continuity between Source and Drain pins, which I don't *think* it's supposed to? I didn't have an exact match so I went with a higher voltage...
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Ok I will check the two transistors nearby. Thanks!
Would this resistor be suitable?
uxcell 15 Pcs Axial Lead 1% Tolerance Metal Film Resistor 0.1 Ohm 2W [url]https://a.co/d/h0zLk6O[/url]https://Ok I will check the two tran.../h0zLk6O[/url]...Last edited by x_orange90_x; 07-16-2024, 07:45 AM.
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Sony Bravia KD-50X690E blown resistor
I just picked up this tv yesterday and the previous owner said while watching tv he heard a loud a pop and then the screen went dark. I removed the back cover and found the source rather quickly; resistor R8601. A chunk of the ceramic had blown off exposing the inner wire. Due to the damage I cannot make out the colors of a couple bands. I likewise cannot find a datasheet for the power supply. I tried pulling up pictures of the same board online but the resistors have different colored bands which I half expected as I've had this happen before.
The power supply is 715G8413-P01-001-0H2S...
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I unlatched the left side ribbon and started wiggling it around and can get almost a full picture. As I said earlier, I did try swapping ribbons and still had the same result which is weird because this looks like a ribbon problem, or possibly a connection issue within the sockets?
Extra info: I blocked off the clock signals and get the image attached
Can clock signals be bad on the TCON side, or only the panel side?...
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I can rule out the ribbon as I already tried swapping them and the symptoms were the same. It would be nice if it were just a TCON. The way that the lines move and everything kinda morphs DOES look like a TCON issue.
I haven't checked the caps on the scaler yet, but I will before jumping the gun and buying a board.
[USER="477674"]EazyBone[/USER] I live about 20 minutes northeast of Detroit.EazyBone...
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Vizio V585-J01 dancing lines and image doubling
I got this tv yesterday and it shows a screen full of colored vertical bars and horizontal lines that move, change, and dance around. When the set is powered on there is a slight buzz from the tcon. I removed one ribbon at a time and this was the result:
Right side connected, left side disconnected = half image on right (somewhat distorted, see photo attached) white screen on left. NO buzzing from TCON
Left side connected, right side disconnected = right side black, left side white with distorted horizontal lines near top of screen. Buzzing from TCON
I swapped...
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I ordered a control and received it yesterday hoping to complete the setup and start testing the TV. The control I bought is IR only so when I get to the part in setup for pairing a remote I can't pair it. Without a Bluetooth remote this tv cannot do anything after it is factory reset. After setup is completed apparently an IR remote will work fine 🤦
I ordered another one with Bluetooth that should come tomorrow. I will test it out and report back. As this appears to have been a firmware bug of some sort I hope it doesn't resurface again.
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I got around to trying this today. I did not get any sort of pattern to display. However, after reconnecting the lvds cable and turning it on it showed a clear image. Got the Toshiba logo, Fire TV logo and eventually to the initial setup screen. I don't have a remote to proceed, but I did power cycle it a few times and it booted up perfectly each time.
I removed and reconnected all of the ribbons and cables previously with no affect. Not sure what made the difference this time, but it's working! I'll report back after I get a remote and play around with it for a while.
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