Picked up this tv in non-working condition. On plug, the backlight would come on, and the led would flash about 16 times before cycling. So my initial guess was a fault with the mainboard. However, after holding down the reset button and plugging in power, it actually booted and stayed on. Still no display, but backlights good, and could hear roku sounds when pressing physical/remote buttons. No more cycling.
Next, detached one panel ribbon at a time, and got the respective white half, and banding on the other. Tcon seemed like common / likely culprit and are available cheap. Confirmed...
ziddey
Member
Last Activity: 05-30-2023, 10:35 PM
Joined: 09-29-2015
Location: nyc
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TCL 55P607 / 55P605 tcon dump
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Re: Vizio M43-C1 No Backlights
Updating on this.
The oven treatment only worked for a few months, and I ended up giving this part a shot. Received GXFCB0QK012030X, which has two additional connectors compared to the original 12040x. Working well.... -
Re: NS-43DR620NA18 picture jumps vertically
Upon further research, it seems like the tcon is likely fine, and the tape fix may be the only economical solution.Leave a comment:
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NS-43DR620NA18 picture jumps vertically
43" 4k roku insignia
Was told this tv had a flickering issue, so I assumed backlight--power board and pulled the back off to examine before firing it up.
Instead, I see that it's not holding the picture vertically. Backlight is completely fine.
Here's a video (sorry about the rotation): [url]https://youtu.be/7YY8NafwNGI[/url]
Could this be a tcon? I've reseated the ribbons / applied pressure to the tabs.
tcon appears to be ts-5543t10c03 [url]https://www.shopjimmy.com/vizio-55-43t10-c03-55t32-c0f-ctrl-bd-t-con-board-for-d43-e2-lwz2vnbt/[/url]...Last edited by ziddey; 08-29-2021, 07:18 PM. -
Re: Vizio M43-C1 No Backlights
Just realized the coax soldered itself shut in the oven.
Got it opened back up, but not without completely melting and making a mess of the plastic insulation. Seems to be working now though..
Might not be a bad idea to stick a paper clip or similar in the coax port before putting it in the oven. It'd be a lot easier to desolder that than to try and clean out the port otherwise. Maybe it'd have been possible to flow out working from the inside, but I didn't feel like taking the tv apart again....Last edited by ziddey; 05-30-2021, 08:10 PM.Leave a comment:
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Re: Vizio M43-C1 No Backlights
While looking for a replacement board, I threw the old one in the oven.
Preheated to 425'f, and then tossed it in. Cut the heat after 6 minutes, and cracked the door after 10. Waited half an hour (way too little time) and gave it a go. Guess the tv works for now...Leave a comment:
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Re: Vizio M43-C1 No Backlights
Has a main board part interchange ever been determined? Just picked up an m50-c1 that needs a new board. Bad board is gxfcb0qk012040x / 715g7288-m02-000-005t.
Found [url]https://www.tvpartstoday.com/756TXFCB0QK0120-Vizio-Main-Board-756TXFCB0QK012-p/756txfcb0qk0120.htm[/url] which lists "756TXFCB0QK0120 Vizio Main Board, 756TXFCB0QK012, 715G7288-M02-000-005T, GXFCB0QK012040X, GXFCB0QK012030X, GXFCB0QK012020X, CBPFETEKX6C, M50-C1"
I do see that the d50u-d1's gxfcb0qk0220030x is much cheaper and more readily available....Last edited by ziddey; 05-24-2021, 07:27 PM.Leave a comment:
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skylake (6700k) smd capacitor
skylake 6700k
Haven't received this cpu yet, but would anyone happen to know the specs for the circled smd capacitors / have a digikey link? Hoping that's all that's wrong with the chip.
Thank you...Last edited by ziddey; 01-30-2018, 12:18 AM. -
Re: Samsung UN40H5203AF LED backlight out
Hah. Is your TV still working? Picked up the same model today with exactly the same results as yours. Saw a burn mark on the top strip.
Swapped it with the bottom, and sure enough, all the LEDs are evenly lit. Individual LED resistance seems to be all over the place though.
Update: Welp, either the original owner damaged the ribbon cable or I did. Screen was working except for one vertical line (can still be seen in perfect black) on the left side. I fidgeted with the ribbon while it...Last edited by ziddey; 11-15-2016, 12:24 AM.Leave a comment:
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Re: PN51D7000FFXZA bad Main board BN94-04689A
This is the chip that's most likely at fault: [url]http://www.ebay.com/itm/Samsung-PN64D7000-Flash-IC1302-for-main-board-/322282202849[/url]
Here's a listing for a repair service (same seller): [url]http://www.ebay.com/itm/REPAIR-Samsung-BN94-04689C-Main-Board-for-PN64D7000FFXZA-/322313311069[/url]
I definitely don't consider myself a pro at soldering at all, but this is not something to attempt without prior experience. That said, there's 48 leads to the chip, but not all of them are used, should you decide...Leave a comment:
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Re: PN51D7000FFXZA bad Main board BN94-04689A
Ack, I forgot to update this thread. I did end up buying the nand chip on ebay and it worked great. Unfortunately, not even a week later, the TV got knocked over while I was away. A travestyLeave a comment:
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Re: DELL 2405fpw
Sorry, I passed the edit period again. New main cap measures 160v when off, and 214v when on. I've seen reports of higher voltages in the 300 range. Is there a problem here?
When off, the power board emits a slight squeal if the logic board is attached. Goes away when turned on. Could be more caps that require replacing, but at this point, I'd like to solve the yellow picture before other repairs.
Tcon board only buzzes when the lcd ribbon is attached.
edit: Damn. Not sure what happened. Been using the monitor all day with...Last edited by ziddey; 06-25-2016, 10:45 PM.Leave a comment:
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Re: DELL 2405fpw
Got the order from digikey today. Replaced the failed big cap. Soldered on the new mosfet and got 5V back, so the zener diode and fuse went in as well.
Unfortunately, the yellow screen still persists. It doesn't seem to be a backlight issue (I'm seeing 18.7V to the inverter, and a nice bright bluish light from the ccfl). The tcon board is making a bit of a buzzing noise. Could that cause this? The left/right edges show a particularly darker yellowing, although the entire display is as if I had nightmode/f.lux on.
edit: forgot to mention...Last edited by ziddey; 06-25-2016, 05:11 PM.Leave a comment:
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Re: DELL 2405fpw
Here are some poor pictures showing the yellowing. There's a sliver of a dell 2005fpw to the right, which shows the proper color.
Despite the yellow tint, it's definitely not dimly lit. Am seeing stable 18.7V going to the backlight inverter.....Leave a comment:
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Re: DELL 2405fpw
I've been using the monitor, supplying 5V externally. However, it has a severe yellow tint all around, especially so on the left/right edges. Settings have been reset to no avail. Occurs on both DVI and DSUB. Something with the backlight/inverter?Leave a comment:
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Re: DELL 2405fpw
I've also come across a dead 2405fpw.
F701, Q1, and D19 need replacement. As well, the main cap is oozing, squeals when off, and isn't able to provide a stable voltage (varies between 61v-64v).
D19 exploded and took out the solder pads. Looks like the unused R17 is a suitable spot to solder a replacement diode.
Before I realized what the situation was, I jumped the blown fuse with an ammeter for less than a second and saw 14A. This caused the buck inductor to smoke up and melt slightly. So that's probably worth replacing as...Last edited by ziddey; 06-22-2016, 06:13 PM.Leave a comment:
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Re: Samsung PN59D7000 cycles after logo
It's alive! Lousy soldering job but it works!...Leave a comment:
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Re: PN51D7000FFXZA bad Main board BN94-04689A
Hey, did you ever replace your chip? I just picked up a pn59d7000 with the same issue, although I don't even get 1:15 out of it. It looks like there's a seller on ebay: [url]http://www.ebay.com/itm/SamSung-PN59D6500DFXZA-BN94-04709A-Main-board-repair-IC1302-/322114274014[/url]
I sent him a message asking if he could flash a different firmware. He did have a past listing for our d7000 series tvs (pn64d7000 specifically: [url]http://www.ebay.com/itm/Samsung-PN64D7000-Flash-IC1302-for-main-board-/322049839255[/url] ).
...Last edited by ziddey; 05-21-2016, 11:19 PM.Leave a comment:
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Re: Samsung PN59D7000 cycles after logo
update: I just came across this listing: [url]http://www.ebay.com/itm/SamSung-PN59D6500DFXZA-BN94-04709A-Main-board-repair-IC1302-/322114274014[/url]
And decided to attack my chip with some canned air. Thing turns on and stays on as long as I keep the chip frozen. Incredible.
edit: also [url]https://www.badcaps.net/forum/showthread.php?t=52522[/url]Re: Samsung PN59D7000 cycles after l...14274014[/url]Last edited by ziddey; 05-21-2016, 10:11 PM.Leave a comment:
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Samsung PN59D7000 cycles after logo
Found a similar thread [url]https://www.badcaps.net/forum/showthread.php?t=24554[/url] where the culprit was the main board. Is there a conclusive test for this?
The main board for this model is BN41-01605A / BN41-01605 and is unavailable anywhere currently.
If the fault is with the firmware, is there a way to reprogram it via SPI or similar? If not the firmware but the board is at fault, I'm tempted to throw it in the oven.
On plugging it in, it turns on, shows the Samsung Smart TV splash screen, then shows the input mode (HDMI1/DVI) in the upper left. Then...Last edited by ziddey; 05-21-2016, 09:06 PM.
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