VIZIO E550VL Obvious Damage Need help

[Scuba]

I just got this Vizio E550VL and took the back off...It has a Master 1 and 2 backlight inverter board on one side and the other side has Slave 1 and 2...The cable that connects between them is burnt bad....The TV itself does turn on but No picture or backlight...Im not sure on sound....Is this repairable or do I have to buy all new backlight boards master and slave?

[Scuba]

Re: VIZIO E550VL Obvious Damage Need help

I assume this is a bad sign with 30 views and no replys...I was able to remake the jumper wires but the TV does the same thing..Turns on but no backlight or picture at all using flashlight..Im scared that even if I replace all these backlight boards that there still may be other issues

[newtothis]

Re: VIZIO E550VL Obvious Damage Need help

I assume this is a bad sign with 30 views and no replys...I was able to remake the jumper wires but the TV does the same thing..Turns on but no backlight or picture at all using flashlight..Im scared that even if I replace all these backlight boards that there still may be other issues

Something obviously fried those wires and just replacing the wires wont help at all, Need to find the cause of it first... another obvious is that if the wires are burnt out then their was too much voltage flowing into the cable... the voltage came from the source and obviously made its way over to the secondary board.... So at least 2 boards are fried here... I would be replacing the boards rather than repairing as their could be endless faults there!

But first thing is to find that cause so you dont run into the same issue after board and cable replacements.

I will update this post shortly to try and help

*EDIT* Just realised that its both master and slaves that are fried so thats 4 boards!.... Can you get a picture of all boards in place and connected so I can see the layout

[aaronwt6]

Re: VIZIO E550VL Obvious Damage Need help

This is a common problem. Same setup as Toshiba models 55G300U and 55G310U. I've fixed a few. You'll most likely need the jumper plus both boards on the burnt side (master1, master2) or (slave1, slave2). I did have one that needed all 4 so keep that in mind as well. These boards seem to have bad connections from the factory that result in arcing and that burnout symptom.

[tom66]

Re: VIZIO E550VL Obvious Damage Need help

Basically the connectors don't make good contact leading to high temperatures in the connector. Just replacing the jumpers or creating new connections will solve the issue.

[newtothis]

Re: VIZIO E550VL Obvious Damage Need help

Basically the connectors don't make good contact leading to high temperatures in the connector. Just replacing the jumpers or creating new connections will solve the issue.

OP says they have tried jumping them with no results Tom.

[Ltank]

Re: VIZIO E550VL Obvious Damage Need help

Check for shorts on slave inverter or bad bulbs associated with that card. Digikey should have the connectors. A customers set should be fixed correctly without jumping the connectors out. Libelity reasons. I agree that it could ne bad connections or it may be a high current draw on the slave side of the inverters board or bulbs

[tom66]

Re: VIZIO E550VL Obvious Damage Need help

OP says they have tried jumping them with no results Tom.

Assuming it was done correctly. I suppose it's possible there's another fault.

[Ltank]

Re: VIZIO E550VL Obvious Damage Need help

Oh Yea! If replacement of connectors, you must remove the carbon or bad section of the boards. Carbon will conduct electricity and it could burn again possibly causing a fire. How expensive are the two boards? You probably will not get wire jumper cable with cards and you would need to make a new one.

[Ltank]

Re: VIZIO E550VL Obvious Damage Need help

Check for shorts on slave inverter or bad bulbs associated with that card. Digikey should have the connectors. A customers set should be fixed correctly without jumping the connectors out. Libelity reasons. I agree that it could ne bad connections or it may be a high current draw on the slave side of the inverters board or bulbs

[Scuba]

Re: VIZIO E550VL Obvious Damage Need help

Wow thanks for all the replys!!! I have indeed made some temporary jumpers for now and TV has not changed...the 4 boards are like $31 a piece and for some reason that jumper which I need 2 of are $29..So I will check digikey as the other prices are from ebay.I cant replace just the jumpers because the actual plastic is burnt and brittle so it basically falls apart.If anyone knows the part # for that jumper on digikey that would help a lot.The Slave boards did take most of the burn so my main problem must be there I would think.

[newtothis]

Re: VIZIO E550VL Obvious Damage Need help

Have you checked the pins for voltage?

[Scuba]

Re: VIZIO E550VL Obvious Damage Need help

Here are the pics of the boards in place with the jumpers I made.

Something obviously fried those wires and just replacing the wires wont help at all, Need to find the cause of it first... another obvious is that if the wires are burnt out then their was too much voltage flowing into the cable... the voltage came from the source and obviously made its way over to the secondary board.... So at least 2 boards are fried here... I would be replacing the boards rather than repairing as their could be endless faults there!

But first thing is to find that cause so you dont run into the same issue after board and cable replacements.

I will update this post shortly to try and help

*EDIT* Just realised that its both master and slaves that are fried so thats 4 boards!.... Can you get a picture of all boards in place and connected so I can see the layout

[tom66]

Re: VIZIO E550VL Obvious Damage Need help

Checked the fuses on the inverters?

[Scuba]

Re: VIZIO E550VL Obvious Damage Need help

Where are the fuses located on the inverter boards? it must be a chip type of fuse or Im not seeing something right.

[tom66]

Re: VIZIO E550VL Obvious Damage Need help

There are white fuses with shiny plating at either end.

[newtothis]

Re: VIZIO E550VL Obvious Damage Need help

Usually marked on the board starting with an F.. usually F1, F2 etc etc

[budm]

Re: VIZIO E550VL Obvious Damage Need help

There are two fuses on the Master inverter, two fuses on the Slave inverter.
http://www.shopjimmy.com/auo-19-54t0...er-1-rev-6.htm
http://www.shopjimmy.com/auo-19-54t0...ve-1-rev-6.htm

[Scuba]

Re: VIZIO E550VL Obvious Damage Need help

Ok I found 2 fuses on the master 1 board and 2 fuses on the slave 1 board
...all check good. marked F12A/72V and 63V
I didn't see any other fuses especially on master 2 and slave 2

[Deke]

Re: VIZIO E550VL Obvious Damage Need help

Hello everyone,

I just bought a Vizio E550VL last night from a person on Craigslist. I checked it out before I bought it, and it worked fine for several hours last night. This morning I turned it on and it would flicker rapidly, even on the initial Vizio logo screen before it displayed my source. I left it on for awhile, and it turned itself off. Now it turns on, flickers briefly, and turns back off.

I opened it up and I have a very similar problem to what SCUBE reported above: The Slave 1 and Slave 2 boards are fried at the connector. It's worse than Scuba's, but definitely all around the area of the connector between the two boards. The master boards don't appear do be damaged, and all the capacitors look ok.

Any suggestions on how to repair it? Should I just replace the two boards and the connector? I'm not sure how to test the voltages. I don't want to replace the boards just to find out that something else is wrong and fry them, too.

Thanks for any insight!

Deke