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LCD POWER BOARD LB700G -RL AI-0019 PCB - HP L1955 19" LCD Monitor

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AI switch on my Acer its shows Acer explorer and then the screen go dark, nothing happening.


problem in lcd back light , open the lcd part and rehot mini ic on the lcd pcb 100% working

Nov 07, 2014 | HP 530 Notebook PC

2 Answers

Hi, Can anyone recognise or diagnose this problem we are having with our Samsung LA32A450 LCD TV? It wont power up, no power on lights. Switch on side of TV wont turn on. Remote wont power it...


hi g_coopster,
Samsung LA32A450 LCD TV wont power up or no power on lights that indicated that no power line.
First of all, check the power line, cable AC cord is it installed properly, change ac cord if necessary. If you experience with electrical tool such as Volt meter, try it to measure the ac voltage from power line.
Or open your rear cover of unit, there are 2 board with difference color brown PCB (IP Board) and Greend PCB (main board). Check fuse on power board, if broken that may cause your problem. Change with the same type as labeled on it. But becareful, if after you change and try plug the power line in than broken again, thats mean power board have sort circuit.
My suggestions, try steps above and if it file, change power PCB block. You can buy it on Samsung cervice center.
Good luck.

Mar 22, 2011 | Samsung LA32A450 32 in. HD-Ready LCD TV

1 Answer

My Model LN32A330J1D LCD TV will not power on even though the red stand by light on the power switch is on. The unit is only one year old.


Hi, Try my methode,
Open the rear cover, there 2 PCB board. SMPS board and Main board.
Check on SMPS board first, check capacitors on it, check if any capacitor like almost exploded. If you see that part, replace it with new and higher value (1000uF/16V to 1000uF/25V).
Or, unplug T-con cable ( cable from pcb main to Panel board). plug in ac cord and try to switch on your TV, if its working , that means panel has problem.
I hope that will help you.
If any problem with it, please send me a comment .
Thanks.

Mar 15, 2011 | Samsung LN32A330 32 in. LCD TV

2 Answers

My dell monitor turns on for 2 seconds then goes black and the green light blinks orange


I assume that you already try this monitor on another PC to verify that the problem is in the monitor, in this case you need to open it up and inspect the fuse, transitors, solder connections on the power/inverter board, see failed Dell monitors here for guide: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further.

Mar 23, 2010 | Dell E173FP 17" LCD Monitor

2 Answers

No power with 700P LCD monitor, No green light, nothing. replaced 2 popped 470 25C caps. Nothing else looks bad. Board 860-ALZ-M713-F


You will need to check for any pico fuses that run along those capacitor lines they may be marked as pf or nf on the pcb

Jan 03, 2010 | Mag Innovision LT776s 17" LCD Monitor

1 Answer

Power light blinking RED after power outage. Tried leaving unplugged for a while. Continued to blink RED after plugging in again. No picture. No sound.


replace the power pcb,check the fuse on the
power pcb and see if that corrects your problem.if not replace the power pcb.go tp
shopjimmy.com to get the board.

Jul 29, 2009 | Sharp LC-19SB25U 19 in. LCD HDTV

1 Answer

My front panel headphone& mic connecting pcb have only 7 slots and the cable is named as 1)LINE OUT FR,2)LINE OUT RR,3)LINE OUT FL,4)LINE OUT RL,5)MIC IN(R),6)GROUND,7)MIC POWER(L) how can it connect...


FR stands for Front Right, FL for Front Left, RR for Rear Right and RL for rear left. These are speakers connections. You need a convertr cable to connect your headphones with your PC. After getting cable, connect it with FR and FL or RR and RL pair. Your headphone will be working. Similarly get the cabl for Mono to Stereo Mic and you can connect your mic too. (ehteshamhusain@gmail.com)

Jul 14, 2009 | Computers & Internet

1 Answer

Sceptre naga blue screen when tv on then turns blank, sound on


i have a secptre t v turns on for a sec and screen is blue then goes to blank screen can anyone help

Apr 18, 2009 | Sceptre X32BV-Naga 32 in. LCD TV

1 Answer

Monitor goes black after power on.


May i know, is it a crt monitor or lcd monitor? If it is a crt monitor, then you can try to check the dry joint on te pcb board especially primary and secondary power supply. After that check the FBT with blue ring tester & cap meter to check their HV cap value.

If it is a LCD Monitor, please check on inverter board and the ccfl lamp too. Please check all the electrolytic cap on lcd monitor pcb board for low esr ohm with blue esr meter. Below is some usefull link for repair lcd monitor and crt monitor:

1) www.FastRepairGuide.com
2) www.fastrepairguide.com/recommend/lcd-monitor-repair/

Hope this help.

To your success,
Kent

Nov 19, 2008 | AOpen F2705 17" LCD Monitor

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