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Re: Acoustic Solutions TV - Stuck on Standby
Ok 1 min let me take some photos.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Acoustic Solutions TV - Stuck on Standby
i want to ad that SPDIF is flashind every 1 second . just noticed that now . think has something to do with that clicking that i hear every second from power boardComment
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Re: Acoustic Solutions TV - Stuck on Standby
Ok here is one I repaired same issue as you significant voltage drop, the same Ic that you replaced was bad along with a small diode and resistor also the two capacitors 100uf 25v and 33uf 50v, and the little 8 pin controller was also bad and causing the same issue check all of them to rule them out.
Photos showing the areas and parts I replaced, also check the diode right next to the heatsink as that can cause this issue as well, let us know if anything tests bad.
Check:
C856
D867
C801
C892
IC806Attached FilesLast edited by ReeceyBurger123; 03-02-2015, 11:05 AM.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Acoustic Solutions TV - Stuck on Standby
Those measurements you took... are these with the main board connected? Try to unhook the main board from the PSU and force the PSU on and recheck those measurements. Maybe the main board is dragging the PSU down?Comment
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Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Acoustic Solutions TV - Stuck on Standby
i took those measurements with the board only connected to power. Any idea how to force the PSU ?Comment
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Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Acoustic Solutions TV - Stuck on Standby
C856
D867
C801
C892
All ok .
IC806 have no idea how to test it . will google it now for datasheetComment
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Re: Acoustic Solutions TV - Stuck on Standby
i have the same problem here ..
check the CN117 Pins on MainBoard ( 18,20,22) , check 3.3v shorted to ground in Main BoardComment
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Re: Acoustic Solutions TV - Stuck on Standby
I force powered the board. All voltages according to schematic are ok except Pin27 - +30v
In this pin i only get 24VComment
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Re: Acoustic Solutions TV - Stuck on Standby
i'm working on it ..
i hv the same issue .. when i Run the Power Board alone ( 17pw26-4 )
the output voltages seems to be fine .. all working fine , but when i connect the main board i hear a clinking noise and the out voltages flip flops like (12v >~ 4.2v ) and 24v drops to 15v .. i tried everythingComment
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Re: Acoustic Solutions TV - Stuck on Standby
you are right. i have disconnected pins 18,20,22 from CN117 , clicking stopped and voltages don't drop anymore
I don't have schematic for Main board to investigate further more.Last edited by claudyu07; 03-02-2015, 12:27 PM.Comment
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Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Acoustic Solutions TV - Stuck on Standby
That will be correct since the power supply board will no longer receives the STBY (PS-ON) signal from the main board when the connector is not in place.
So the problem is some where on the power supply board.
I will need to look at the diagram to see how it works first.
What happen if you have everything connected back together but without having the cable (24V) to the inverter board connected, do you get steady 24V?
I also want the pictures of the whole back side of the TV to see how all the boards are connected together.Last edited by budm; 03-02-2015, 02:16 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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Last edited by budm; 03-02-2015, 02:49 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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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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