Having problems with your LG Flatron 775FT 17" CRT Monitor ?

Monitor will not power up. was working fine last night, and now is not working at all. Just black screen.


Answers :

Very incomplete thread..i gotta know 1st what is ur system\015\012configuration..is all ur system is getting power on..is there any light\015\012on cabinet glowing (the power n hdd)..is there is power light coming on\015\012ur monitor..is there any sound coming out of the system..or the set is\015\012dead..??..

considering that the system gets on but u get no display and assuming that the bios has not been flashed in a wrong\015\012way & u r a professional..

however, before u proceed to complex checkups..check the mains power supply- the\015\012fuse/switch/wirings/power cords/other associate circuits..

probably itz either minor case of loose ram/improper\015\012ground/cmos battery..
or major case of faulty or defective smps/cpu/main board short/display adapter or card/monitor

..plz do check the following as in order:..

1)\015\012in power on mode, open/unplug the data/vga cable of the monitor from\015\012cabinet..see if raster or 'osd' is appearing on the monitor screen..if\015\012so monitor is ok..else replace the monitor and see..

2) if u hv a graphics card, replace with a standby or onboard and see..

3)\015\012see if the ram(s) is loose/faulty..open clean/remove carbon & or\015\012oxide formed on the teeth with an eraser n resit it..or replace with a\015\012standby n see..

4) unplug mains supply..pick open/remove the cmos battery..check (above +3v)..resit..

5)\015\012remove/clean dust neatly..dust is non-uniform in nature n may cause\015\012jam/short circuitry/excess resistace n many more..resulting an increase\015\012in heat..

6) open the CPU Heat-Sink with fan out of the socket..put some "Heat Sink\015\012Compound" (available in local electronics chip level spare market)\015\012between the cpu/processor and the CPU Heat Sink *** fan..resit/fit it\015\012tightly in position..

7) the smps itself may b defective/faulty..check the outputs of smps\015\012viz. 0v (black~ground); +12v (yellow); +5v (red, green~ps-on, violet~pg\015\012& grey~sb); -12v (blue); -5v(white); +3.3v(orange)..
\015\012the 'oscillator and error amplifier ic', or\015\012pwm switching regulator circuit..look for defective\015\012protector-transformer/resistance(esp 4.7k)/mosfet..
\015\012
\015\0128) if\015\012itz not the smps, then it must b ur main/mother board..see with a debug\015\012card for mb error..may b short..look for defective capacitors(esp above\015\0121000mfd)/mosfets..go through the mb's south bridge n the circuit lie\015\012around atx connector..the crystal clock generator (if cpu isn't heating up)....
\015\012
always better to seek advise from ur system admin/vendor....
Hi,
\015\012
\015\012First you have to check that the power is coming in the power board or not if power is coming then interchange the power cable of cpu as well as monitor.after changing the power cable if still not powering on then problem with internal component like that EHT . its better to call engineer for repair
Repair Help & Product Troubleshooting for LG Flatron 775FT 17" CRT Monitor

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