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Re: vizio vp50
here is whole board hopefully decent enoughAttached FilesComment
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Re: vizio vp50
That one which got messed up, can you try uploading it again as it looked to highlight the right places, the JPEG probably got corrupted somehow.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
Do you have one with the highlighting or can you do it again.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
here they are let me know if you need other areasAttached FilesComment
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Re: vizio vp50
okay what did i do wrong for no response lolComment
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Re: vizio vp50
Patience, I was busy.
Where is the Va & 431 device, please highlight them, so I can figure out if they are connected.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
Ah now I see it.
See attached. Is this a 431 device?Attached FilesPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
Darn sure enough it is ....it's located between 2 heat sinks and had a film type capacitor covering it..just so you know there is no way in heck i can do a live voltage test on it it way way to tight in there will have to use a needle nose pliers to desoldier it very tight..umm can i do a basic regulator test with it?Comment
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Re: vizio vp50
Can't you solder wires to it? On the bottom of the board, perhaps?
We need to measure it in circuit.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
ha should have thought of that duhhh , did something similar with a crappy salvania tv worst set i ever worked on...fixed it with a new "used" inverter lasted about a month came back with a crack about 6 inches long on the inverter pcb and i just junked it lol P.O.S anyways yeah i will do that another day the set is at work i am at home now just have the boards with me ..so there ain't a effective test i can do on the bench? like desoldier it and charge and discharge it or something?Comment
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Re: vizio vp50
okay i take that as a no...okay i will see what i can do.....Comment
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Re: vizio vp50
I'm not available 24/7. If you look in the datasheet there are some example test circuits for the 431 shunt regulator.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
k found how to guide looks like i have to get a analog meter...all i got is digital soooo i will seek for one...thanks for all the help i will report back and i have some old power boards around with same type shunt regulator made by a different company but should work if this one is bad...Comment
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Re: vizio vp50
No need for analog meter. You can do it with digital meter.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio vp50
ok i think my dmm is going wonky getting inconsistent results on the ohm range i don't have 10k ohm range do have 20k i will need to get another dmm to confirm this....but anyways this test was done with analog http://www.jestineyong.com/how-to-te...gulator-tl431/
hopefully none offended for the link, anyways my meter is elenco m-2665 and i think its going out,,, gonna try to get another meter see if i can get consistent results,...Comment
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Hi everyone,
Brought a non functionnal PS5. Apparently only a bad PSU...
No beep, nothing.
After some tests i found this :
- PSU is fine (12 volts stable)
- 12 volts line is shorted
- DA9065 was fried, F7003 also => Replaced both of them, short is gone on 12 volts line, no dead short anywhere else.
- By the way, nothing change. No signal, no power, no beep.
Mesuring all rails with my workbench psu (12 volts input)
- 0.00 amp drawing
- 12 volts, 5 volts, 2 volts, 1,15 volts are presents (suppose new DA9065 do is... -
Failure Symptom
No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.
Where is the short?
Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.
Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hello,
Dell Latitude 5420 P137G
Board: LA-K491P REV A01
I have received this laptop which was described as "does not power on or accept charge." Battery shows no sign of charging when charger is plugged in, nor does the board show any signs of life when battery is unplugged and charger is plugged in. No light from the LED at all or any other indications of activity.
Board seems to have no shorts, all power rails are fine and show high resistance.
When charger is plugged in, voltage is present in 3.3V rail but absent in others.... -
Bug looks like hardware so thought I posted it here. Exact same behavior on 2 different model 4K Vizio TVs running their SmartCast smarttv software. After launching youtube app, press vizio button on remote to return to the smarttv menu, once in awhile, a column of bad pixels will show for few seconds on the left hand side.
It seems the vizio software is reinitializing hardware when returning to the smarttv menu. In general, SmartCast software isn't very good. Also will randomly (relatively infrequent) get no network connection when on wifi and require reboot....
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