VIZIO E550i-B2 Sound - No Video Problem

[kevinm34232]

Re: VIZIO E550i-B2 Sound - No Video Problem

Fixed this TV once before for bad solder joints (no backlight), but now it's back with sound, backlight, but no picture. Any ideas?

[SLK001]

Re: VIZIO E550i-B2 Sound - No Video Problem

Yes, it's a particularly bad design for a board to board connector. You must have a later version of the PS that detects low current going to the driver board and forces a shutdown. My TV would operate just fine with the broken connector (just no backlight), so it obviously didn't have a low current detection capability.

[SurrealMustard]

Another one fixed!

Add me to the list of people who have had to fix this rather silly issue. Fresh solder on the connections and hot glue on the connector brought this Vizio back up. That connector seems to have been designed to fail just outside of the warranty period .

In this particular case, it wasn't even powering up at all. The white power light would slowly pulse and then the thing would eventually just give up. Every single point for that connector had broken free.

[JWW]

Re: VIZIO E550i-B2 Sound - No Video Problem

Thanks guys...a little searching goes along way. Easy fix...Nice
A little 'bout myself..I learned to troubleshoot computer & software problems on my own since 98, figured why have to ask someone else to. I help others that either can't afford it or don't have the insight

Thanx again,

JWW

[Walter walker jr]

Re: VIZIO E550i-B2 Sound - No Video Problem

check driverboards. on the two i repaired seems driver boards became un seated and where making contact with speakers grounding them. again thank u guys im always grateful for the fat(knowledge) u put on my head while opening my eyes. i just headlocked my electrical specialty degree plus 4 other certificates that coincide with my field. shortly before that, in 2016 opened (out the mud) the first tv repair shop in my end of texas and you guys have helped me grind through the struggle. you guys are beast and what im really striving to be like. Badcaps for prez

[dick_barton]

Re: VIZIO E550i-B2 Sound - No Video Problem

With a cheap multimeter you can start to make headway as suggested.
I also suspect an Led(s) fault so in the meantime you could look up on Youtube, video's on how to remove the LCD panel and check out the Leds.
Again as suggested you would need to be very careful lifting the panel so as not to damage it when removing and replacing it so watch a few videos.

[attainteddragon]

Re: VIZIO E550i-B2 Sound - No Video Problem

just go out and get yourself a $10 to $25 multimeter and we can help you get to the bottom of it. you dont need to spend $150.

if you just randomly board swap, you will most likely throw way too much money at it and may not end up with a successful repair in the end anyway.

[SLK001]

Re: VIZIO E550i-B2 Sound - No Video Problem

Dude, I have a few screwdrivers and no diagnostic tools. Did you even read my posts? I'm just a guy trying not to spend $500 on a new TV. I was told by Shop Jimmy this was a good source for advice. However it appears this is not the place for the "average Joe" to venture and my presence has upset you. Thanks for the warm welcome.

Wow... We're sorry that you don't feel welcome. I get that you don't want to trash a $500 TV, but you need to make at least a small investment to obtain just the basic tools. We don't have the TV - you do. Most of us would probably breeze thru the fix of this TV, but for us to help you, you need to present us with some basic data. It's not hard (stay-at-home moms have had success here), so at least try to do your part.

[Crommy]

Re: VIZIO E550i-B2 Sound - No Video Problem

Dude, I have a few screwdrivers and no diagnostic tools. Did you even read my posts? I'm just a guy trying not to spend $500 on a new TV. I was told by Shop Jimmy this was a good source for advice. However it appears this is not the place for the "average Joe" to venture and my presence has upset you. Thanks for the warm welcome.

[dskall]

Re: VIZIO E550i-B2 Sound - No Video Problem

I would throw it away as it is probably bad leds which are harder to change than just swapping boards. Really why should we waste our time trying to help you when you are unwilling to even take a voltage test like budm suggested.

[vinceroger69]

Re: VIZIO E550i-B2 Sound - No Video Problem

If you have or can borrow a multi meter we can advise you what to test/how to test the boards that way you should be able to narrow down the faulty board/part the trouble is with second hand parts they can be faulty too we have seen this numerous times

[Crommy]

Re: VIZIO E550i-B2 Sound - No Video Problem

Thank you, budm. I did check out the solder joints and there was no cracking and the connector was solid.
Unfortunately it's not cost effective for me to do component repair. I called ShopJimmy for some guidance on my swaptronics effort but they told be to post here for help on Badcaps. Consensus looks like the LCD board is my next swap out since the new power supply didn't do the job.

[budm]

Re: VIZIO E550i-B2 Sound - No Video Problem

Vizio 91.76Q02.001G / 91.76Q10.001G LED Driver for E550I-B2
https://assets.shopjimmy.com/media/c...2.001g-top.jpg
Check to see if you have boosted DCV between the two pads where cap TC6 is not installed. The LEDs are in the panel which is the common failure for TV with LED backlights.
Pictures provided by shopjimmy.
BTW, you did do the inspection for bad solder joints per post 1?

[Crommy]

Re: VIZIO E550i-B2 Sound - No Video Problem

Thank you! Are you thinking this?
https://www.shopjimmy.com/vizio-91-7...led-driver.htm

[SLK001]

Re: VIZIO E550i-B2 Sound - No Video Problem

Need some advice. I have the problem of no sound but can see the picture in a darkened room and a flashlight. A new power supply did not fix it. Which board should I replace next? No visually damaged components, and unfortunately, I don't have the capacity to repair boards. Thanks!

My first guess would be bad LEDs in the backlights.

[Crommy]

Re: VIZIO E550i-B2 Sound - No Video Problem

Need some advice. I have the problem of no sound but can see the picture in a darkened room and a flashlight. A new power supply did not fix it. Which board should I replace next? No visually damaged components, and unfortunately, I don't have the capacity to repair boards. Thanks!

[Pioneer621]

Re: VIZIO E550i-B2 Sound - No Video Problem

To properly dry the screen, you have to take the panel completely out. Check to make sure no water has wicked between the two glass panels - if not, then you should be okay.

The better way to repair the connector is to remove both boards at the same time, resolder the connector, then reinstall both boards as one unit. This keeps the stress on the connector to a minimum.

Yeah I've read about taking the panel out / layers to clean, but I'll give it a few days in a warm room with a small heater and see if it clears up; the water spot has already started to shrink, so I'll see after a few days. I had another set with water behind LCD in the past that did go away after some time, so we'll see on this one I guess.

I kept it quick for now for basic testing, simply removed the old solder, then re-soldered it with fresh. If any problems come up with that, I'll try the other method you suggest.

Sad that a lot of this model probably got trashed, for such a simple problem with the connector.

Thanks!

[SLK001]

Re: VIZIO E550i-B2 Sound - No Video Problem

Thought I'd add another one to this thread.

Just trash picked one of these, of course CN202 had all broken solder joints. I'll have to let the screen dry thoroughly, before I call the set good / bad, as it sat out in the rain before I picked it up, plus the screen has some scratches, although not physically broken.

On another note: I've trash picked like 20 LED TV's with bad backlights over the last several months, I'm not impressed at the rate they fail, many were fairly new, good screens, burnt led strips...

To properly dry the screen, you have to take the panel completely out. Check to make sure no water has wicked between the two glass panels - if not, then you should be okay.

The better way to repair the connector is to remove both boards at the same time, resolder the connector, then reinstall both boards as one unit. This keeps the stress on the connector to a minimum.

[Pioneer621]

Re: VIZIO E550i-B2 Sound - No Video Problem

Thought I'd add another one to this thread.

Just trash picked one of these, of course CN202 had all broken solder joints. I'll have to let the screen dry thoroughly, before I call the set good / bad, as it sat out in the rain before I picked it up, plus the screen has some scratches, although not physically broken.

On another note: I've trash picked like 20 LED TV's with bad backlights over the last several months, I'm not impressed at the rate they fail, many were fairly new, good screens, burnt led strips...

[tom thumb]

Re: VIZIO E550i-B2 Sound - No Video Problem

Add another one to the list
Same problem and same fix.
I glued connector 1st then I took out both boards at the same time
Re-soldered and it has been working perfectly for 2 months now
I wish I would get in more of these.
An easy fix makes the day go better