Re: e420vse no standby light
Please excuse this dumb question but how much of what kind of voltage does the leds on a E420VSE require?
Please excuse this dumb question but how much of what kind of voltage does the leds on a E420VSE require?
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Re: e420vse no standby light
working on two of these now, F1 blown on one and two pb210bd measuring low on the other, anyone seen service manual on these?Comment
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Re: e420vse no standby light
I just ordered one ill let ya know how it goes in several weeks when I get itComment
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Re: e420vse no standby light
just came in this morning going up shortly to try itComment
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Re: e420vse no standby light
ok so I dont even have 24v coming out of power supplyComment
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Re: e420vse no standby light
sorry been busy working on other stuff im going up to install that power supply but im still confused why im not seeing any voltages on the 24v line but by using this other board there will be no bl on connected to turn the 24v on or shouldnt it be on without even plugged in to the driver board or likewise on a lcd with inverter or do I have 2 problems one being the driver board and being some where else not turning on the 24v the specs on this power board says minium 12v could I connect to a 12v spot on the board or try to get 24v to it thanks and im enjoying this the more and more I readComment
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Re: e420vse no standby light
Not sure if this makes sense or not but why would a bad led driver board cause no standby light on tv. doesnt this sound like more of a mainboard issue(maybe a bad eeprom or something). not sure just throwing it out there.Comment
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Re: e420vse no standby light
I actually have one of these with the same symptoms. I just ordered a programmed eeprom. Ill keep you posted.Comment
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Re: e420vse no standby light
I believe the front led power light power is routed through the led driver board there are no other wires going to where it isComment
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Re: e420vse no standby light
ok so board fixed my problen but then find out my cosmeticaly ok screen is in fack busted oh well ill post all the boards or look for another cheap one with busted led driver but with a good screenComment
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Re: e420vse no standby light
can you give instructions how you did it. thanksComment
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Re: e420vse no standby light
just looked at the pic and did that
unscrew the heat sinks and the fets bend right over and
then reinstall the heatsinks and remove the two caps lay the one down and put the other one in with 24v and groundLast edited by kornwood; 04-19-2013, 09:05 AM.Comment
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Re: e420vse no standby light
Did you have to remove the Potentiometer as in the e-bay picture?Comment
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Re: e420vse no standby light
no I removed the 4 screw legs and was able to screw it down upside down right below on one of the 2 empty screw holesComment
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Re: e420vse no standby light
Hard to tell by the ebay pictures but where are all the wires soldered too. If you dont mind can you give more detailed instructions. Sorry Im a little confused as what to do exactly. Did you also buy the $14 or the $50 ebay listing. thanks in advanceComment
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Re: e420vse no standby light
post 12 has a link to ebay its ended but the pic is there zoom in and you can see sorry as i have already screwed it back togather and put in a abox and put away til i get a screen
i bought the 14 and moved the stuff around and saved the 36$ for other stuffComment
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Re: e420vse no standby light
hello everybody: I'm new here and so far I'd found very interesting information, I have the same problem ( display turning off after a couple of minutes of power it on)with my Vizio 42vse, so I'd just ordered the $14 board from china and I'll try to do the Mod.,
one question: when moving the pontentiometer what voltage should I'd to adjusted it? or should be better just to replaced it with a fixed resistor? ok I would post some Pict. if it works when I get it. Thank'sComment
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Re: e420vse no standby light
Repair kit: If you can get your own components.
http://www.ernestos-electronics.com/...er-repair-kit/Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: e420vse no standby light
Geo, let me know what you do exactly when your done. I would appreciate it. Which piece may I ask is the potentiometer. thanksComment
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Re: e420vse no standby light
bmolke, a potentiometer is a variable resistor(look pic at post #20 the blue box) and yes I would post pictures and notes when I do it( in a couple of weeks when I'll receive the china part) CheersComment
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I had a Dead Samsung UN65MU6300FXZA with Mainboard BN94-12440E
Dead / No Power / No Standby Light results after power company had three
consecutive power outages on/off/on/off/on/off after which TV was rendered unresponsive.
After exploring the issue found Mainboard was the fault. Then with research on this site determined IC1604 was the suspect. The IC1604 is a surface mounted device (SMD) EEPROM, Winbond Model 25Q40CLSIP. A read on this EEPROM came back with all FF FF FF FF FF in all registers blank and empty of data. I had a spare mainboard with intact IC1604 and utilized... -
I have a Vizio E550i-A0 that will not power on. It also does not display the standby light in the corner. I disconnected the main board cable to see if the backlights would light but they did not (maybe this is normal for this set?). I checked the voltages on the plug and they all read in mV or 0, so there's no voltage there. The fuses are ok, and the voltages of the 450v caps read about 160v. I see no visual damage on either the power supply or main board. I have read online that the main board is usually the culprit in this model, but not getting backlights with the main disconnected makes me... -
Have vizio E60u-D3. No standby light. Have searched and read all D??u-D3 posts. posts with same symtoms fixed by new power supply, one guy needed back lights also.
main boards are kinda spendy and, out of stock alot of places. i would like to fix my board.
PS voltages
1 VSNS -2mV
2-5 LED-OUT -2mV
6-10 GND -2mV
11 +16VS 16.29V
12 AC-DET 3.929V
13PS-ON -3mV
14 +16VS 16.29V
15 +16VS 16.29V... -
No standby red light, nothing
This Sony has a separate AC->DC power adapter supplying 19.5V to the TV power board (JK3)
Disconnected JK3 power board from main board, checked voltages on all the pin outs
At a few pins I can see the power supply providing 19.5V to the main board
Based on the service manual triage.. it seems to be pointing towards the power board (JK3) being the most possible culprit
LED light turns on when I disconnect LED driver board ribbon from mainboard (so i thought it is the mainboard,... -
Hello everyone,
I got a Samsung The Frame 55 inch TV for free from uncle cause it is not turning on anymore. I am in the second year of training as an electrician so I have knowledge already but I am far away from to be a pro.
The TV has Standby but ist not turning on. A Friend of mine owns a 50 inch Frame TV so I checked the One Connect Box and the One Connect Cable there. Both are good and working normally. I have opened the TV case and measured some voltages on the Board.
What I already found is that the 12.8V are not an the connector to the main board connector to the power...
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