Re: Westinghouse VR-3710 stuck in standby
No voltage detected at the backlight headers at any time.
No voltage detected at the backlight headers at any time.
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Re: Westinghouse VR-3710 stuck in standby
Bump. Have y'all deemed my case hopeless?
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Re: Westinghouse VR-3710 stuck in standby
Without a voltage on SW pin CON2F then I think the backlights will never come on.
You could remove the SW wire from that connector and use a 1K resistor from 5V to SW pin (not wire) and see if they come on.Willing to help but I'm no expert.Comment
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Re: Westinghouse VR-3710 stuck in standby
Well I have a tv with basically the same problem. No blon voltage. Maybe if I can fix mine I can help you.I assume no responsibility for any stupid suggestions I might post.Comment
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Re: Westinghouse VR-3710 stuck in standby
BTW, there are many 3-pin SMD regulator ICs on that main board, did you check the DCV of all 3 pins yet? Make sure to report the reading and the P/N as printed on the body of the IC.
https://www.badcaps.net/forum/attach...9&d=1487902188
I see five ICs.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: Westinghouse VR-3710 stuck in standby
Dick_barton, applying voltage to SW brings up the backlights. Thanks.
Testing ICs....Comment
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Re: Westinghouse VR-3710 stuck in standby
budm, here are my readings from absolute left to right with the connectors at the top, in DCV compared to ground at a power board screw.
3.27, 1.79, 0
1117B
18 2891
4.99, 3.29, 0
1117B
33 331Q
3.27, 1.25, 0
1117B
AD A21h
3.26, 1.88, .59
1117B
AD A21h
3.26, 1.25, 0
1117B
AD A21hLast edited by isherwood; 02-27-2017, 07:40 PM.Comment
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Re: Westinghouse VR-3710 stuck in standby
They are fine. I do not have any other suggestion.
I wonder if the TV was hit by surge of some sort that took out the power supply and the main board. Nothing look burnt out on the main board?
Try disconnecting the T-CON to see what it will do?Last edited by budm; 02-27-2017, 11:23 PM.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: Westinghouse VR-3710 stuck in standby
Sorry, I should have mentioned that. No imagery was visible when the backlights are on. Just gray.Comment
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Re: Westinghouse VR-3710 stuck in standby
So can you see from the front that the backlights are on and have you tried selecting menu on the remote to see if you can spot the image. It could be that IPWM needs some volts to bring the backlight brightness level up.Willing to help but I'm no expert.Comment
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Re: Westinghouse VR-3710 stuck in standby
Yeah, I could see that both backlights came on, but no images appeared. I tried changing the source to trigger some text. Seems like it would've been visible even with weak backlight.Comment
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Hello
I have an TV Led 4K Selecline 65s18 with mainboard T.MS3458.U801
The TV is faulty with stuck in Standby RED LED. Can't power the TV.
Before this problem , the TV stuck the picture with artefact , i unplug the AC cable and since the tv is stuck in standby .
All voltage are OK on PSU and main board for regulator. I tried flash firmware 25Q64 with many dumps
But the voltage on power button is 0.6V not 3.3V. When i press power button the voltage up to 0V. I tried to add 5V with Power Supply on 5V_STB and 3.3V on Power... -
Hello to all friends of the forum and well found, here I am asking for your help and sorry for my translated English.
As per Hisense tv title LTDN50K220WSEU stuck in standby
PSU rsag.820.5687 HLL 4855WF
Main rsag 7.820.5842
I enclose the psu diagram, after the first routine checks I find myself with a regular standby voltage of 3.3v blue light on steady when the power button is pressed nothing happens, psu disassembled and bench checked ... forced ignition by sending a signal 3 , 3v on the SW and PWM2 pins the psu turns on and delivers all the voltages... -
Hi. I have the following problem with my TV. After connecting to mains, the standby led (red) turns on, but TV is not responding to remote control or buttons on TV. After some measurements, I found out that +5 V standby voltage is present, but I dont have ON/OFF signal coming in to turn PSU on. It stays at zero volts. After looking at the schematic of the mainboard, I should get ON/OFF signal coming in at the R1402 resistor, but it stays around +3,5 V. So I removed it and I was able to turn on TV with buttons on TV, but not with remote control.
What could be the problem ? Thanks...01-21-2024, 03:39 AM -
Hi techs, I have a Samsung ua39eh5003r which switches on and then goes to standby. I have to wait for a day or two for the tv to switch on again, all the time it is stuck on standby. I have checked the voltages on the power supply board on both occasions when it is on and off and these are my findings:
Connector CNM803:
TV ON
Pin1,3,4,5(Vamp),7(Vamp)- 12.6V; Pin2(PWM_DIM)- 0.96v; Pin6(BLU_ON/OFF)- 4.41v; Pin8,9,10- grnd; Pin11,12,13- 5.16v; Pin14(Power ON/OFF)- 3.3v
TV OFF
Pin1,3,4,5(Vamp),7(Vamp)- 12.6V; Pin2(PWM_DIM)- 0.06v; Pin6(BLU_ON/OFF)-...09-18-2021, 11:51 AM -
When the Main board is disconnected, the back lights are off but tapping on the chassis makes them light up and all voltages are then good. Connecting the main board up makes the TV work normally until moved. LED INERFACE STRIP BN41-01971A has a short on the first 2 pins on the left of the picture, the cable tests good. All the other pins and all LED strips test good. Is there an easy way to fix the short or do I need a new interface. Any help would welcome.
PSU number bn44-00610A L46SF_dpn
1 B13v 12.4
3 B13v 12.4
5 Vamp 12.4
7 Vamp 12.4
9 GND...
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