Re: Hard glue/Cracking screen
Why do you have to break all the clips off? You can usually unlatch them and stick a piece of heavy paper under them to prevent them from snapping back in place. Once all the clips are unsnapped, lift off the panel. I don't lay panels flat, but stand them on their edges against a wall, so having the bezel on them isn't a problem....
SLK001
Badcaps Veteran
Last Activity: 12-10-2021, 07:38 PM
Joined: 05-29-2014
Location: Coral Springs, FL
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Re: Hard glue/Cracking screen
Is it really actual glue, or just a thick double sided tape product? Sony uses a double sided tape to attach the panel to the panel mounting bezel which has to be removed before the panel is free to lift off.
You've got me wondering if the panel AND the mounting bezel can be removed together. Possibly so, but how would you put them back together by yourself? Three people, maybe... by yourself - not so easy.Leave a comment:
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Re: Sony KDL-49WE663 red led blinks 6 times
It should be in the range of sub 100 milliohms....Leave a comment:
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Re: Repair or Replace
It would be nice if the manufacturers would again release a service manual for their electronics. I get so tired of tackling a PCB blind.Leave a comment:
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Re: Sony KDL-49WE663 red led blinks 6 times
I think you found your problem....Leave a comment:
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Re: 10 year old Vizio VO370M has intermittent flickering backlight
I can't see any problems with any of the joints. See if you can induce the problem by wiggling the cables to the tubes.
As a last resort, you could buy a single replacement tube and replace the ones in the TV one at a time to see if you have a single bad tube. Watch the TV with the screen removed (just the backlights) and see if a single tube flashes first. You can film it with your camera and slow the playback to better visualize what is happening.Leave a comment:
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Re: 10 year old Vizio VO370M has intermittent flickering backlight
Take some close-up pictures of the backside of the power supply board, especially in the area of the two transformers (lower left corner in your top side photo). Also, try to clean all the dust and cobwebs off the top side of the PS so that we can get a better view. A blast from a compressed air line will do just fine.
As for measurements, start at the tubes themselves, then at the tube end of the supply lines, then at the PS end of the supply lines, then at the output of the Schottky diode for the...Leave a comment:
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Re: 10 year old Vizio VO370M has intermittent flickering backlight
It would be my bet that one of the tube holders has a fractured solder joint, or a bad crimp connection. Look at the entire backlight for dark areas, which would indicate arcing across a joint.
When it flickers, is it limited to an area of the screen, or does it cover the entire screen?Leave a comment:
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Re: 10 year old Vizio VO370M has intermittent flickering backlight
I had a Sharp 42" that had flickering backlights (CCFL). The tubes weren't soldered, they were "snapped" into a holder. One of my tubes wasn't fully snapped into its holder on one end, so contact would dance from low resistance to a higher resistance, causing the b/l to dim. All I had to do was first find the culprit, then snap the loose end into its holder. This fix was my first of a flat panel TV.Leave a comment:
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Re: Sony 65” issue I caused
I've tried the iron method to attempt to get the ribbon reattached and I failed every time. My ribbons were only partially detached - I never had one fully detached like yours. Do not apply solder to these ribbons. They are attached by a conductive layer of adhesive. My guess is that they are ultrasonically bonded. Also, the tab has to [B]perfectly[/B] aligned to the glass. None of these requirements bode well for a home repair.
Give it a try... Who knows - you may be the first to successfully reattach one of the tabs to a panel. It would...Leave a comment:
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Re: Sony 65” issue I caused
It's scrap. Salvage all the boards and the strips and try to recoup your money.
You've got to be careful with these things.Leave a comment:
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Re: Removing large LCD panels
One thing to add - resist the temptation of setting a panel directly on any form of carpet. It will attract stray fibers and lint like a magnet. Set the panel on a clean cotton towel and set the diffusers also on the towel in front of the panel (they are "attractive", too). Also, do not touch the panel or the diffusers with an unprotected hand. The oils in you hand will leave a mark that will have to be cleaned off. Wear a pair of cotton gloves, or even put a pair of cotton socks over your hand when you handle the panel.Leave a comment:
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Re: Removing large LCD panels
[URL="https://www.badcaps.net/forum/showthread.php?t=76164"]Here's[/URL] a discussion that we had a couple of years ago on this very issue.
My go-to tool for removing large panes is my pair of double suction cup grippers.Re: Removing large LCD panels
[URL="https://www.badcaps.net/forum/showthread.php?t=76164"]Here's[/URL] a discussion that we had a couple of years ago on this very issue.
My go-to tool for removing large panes is my pair of double suction cup grippers.Re: Removing largeLeave a comment:
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Re: VIZIO E550i-B2 Sound - No Video Problem
You have to do them ALL. Looking at your picture, I can see that every one of the joints are broken. You need to do the fix in post #49. If you don't, your fix will just fail again in a couple of months.
As for your solder blob, get yourself some rosin solder flux (do NOT use plumbing flux). If you use an acid based soldering flux, you'll ruin your board....Leave a comment:
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Re: VIZIO E550i-B2 Sound - No Video Problem
Your picture doesn't show anything other than the black area. Take an extreme closeup of the BACKSIDE of the connector (the solder joints), like those shown in post #1. Only this type of picture will tell the tale.Leave a comment:
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Re: VIZIO E550i-B2 Sound - No Video Problem
This TV doesn't shut down due to a backlight fault, so you can have both video and audio with no backlight. The black spot was due to the intermittent sparking of the remaining connections.
Your fix should be the one detailed in post #49. The way I would do it now, would be to alternate between top and bottom connection. If you use 22 gauge solid insulated wire, having four on each net will supply more than enough current. There is no need for the entire 8+8 that I used.
As for the fix in...Leave a comment:
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Re: How to diagnose whether a TV LED is bad (without using an LED tester)?
I've never seen a strip with resistors on it.
The PS ramps up current until a certain value is obtained (up to its maximum voltage capability). Good strips and strips with bad LEDs will have different voltages for that current value. The "blink once" phase is the PS testing the LEDs for proper operation. If the LED test fails (ie, to pass the test, 150 mA at 125-135V has to occur), PS won't provide the current to ANY strip.
If you're seeing all the LEDs light during the...Leave a comment:
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Re: Vizio m422i-b1 no channels
Plug a 36" length of 18-20 ga wire in the antenna jack and scan for local channels and bend it vertically. You have to select antenna in the setup (somewhere). If it doesn't find any, I would suspect the tuner itself.Leave a comment:
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Re: Am I likely to have damaged the LCD
Good job - the panel gods were on your side this time.
A lot of times, a repaired LED will show these hot spots due to the lens not being replaced in its exact prior position. The way I do it is to place the lens using 5 minute epoxy and looking straight down on the LED, center the lens so that the LED is centered in the view. Before I determined the better technique, I had to redo many a panel in order to fix this.Leave a comment:
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Re: Vizio E550i-B2 no power, no sound, no LED -- blown IC found
A capacitor does NOT have ANY continuity. What you are seeing is the charging of the cap by your meter, which makes it seem that there is continuity, but it is a false indication. If you DO see constant continuity on a cap, it is most likely blown and shorted, so replace it.
I'm not sure how you are measuring continuity on an IC.Leave a comment:
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