Having problems with your LG Studioworks 563N 15" CRT Monitor ?

Power is on but self display & cpu display not


Answers :

Probably itz either minor case of improper ground/cpu fan/faulty power cable..
or major case of faulty or defective main board/ram/daughter or addon card(s)..

..plz do check the following as in order:..
the Hardware part:..
1)a)in power\015\012on mode, open/unplug the data/vga cable of the monitor from cabinet..see\015\012if raster or 'osd' is appearing on the monitor screen..if so monitor is\015\012ok..else replace the monitor and see..[not applicable in case of\015\012laptop]..
b) in case of laptop try to get output from external\015\012display unit/monitor using vga port..if there's proper display in\015\012there..the problem is probably with either the 'lcd'or 'ccfl' or\015\012'inverter circuit'..

2) if u hv a graphics card, replace with a standby or onboard and see..[not applicable in case of laptop]..

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

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

5) a) see if ur hdd is noisy or emitting any 'ticking' noise (like 'tuk tuk' or 'kirr kirr')..
b) or if the system is not supporting either the newly installed device or itz software/driver /firmware
if so, u need either a fresh os installation or ur hdd is likely to b replaced..

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

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

8)on main/mother\015\012board..see with a debug card for mb error..may b short..look for\015\012defective capacitors(espabove1000mfd)/mosfets..go through the mb's\015\012south bridge n the circuit lie around atx connector..the crystal clock\015\012generator (if cpu isn't heating up)..

9) [in case of desktop] the\015\012smps itself may b defective/faulty..check the outputs of smps viz. 0v\015\012(black~ground); +12v(yellow); +5v (red, green~ps-on, violet~pg&\015\012grey~sb); -12v (blue);-5v(white); +3.3v(orange)..the 'oscillator and\015\012error amplifier ic',or pwm switching regulator circuit..look\015\012for defective protector-transformer/resistance (esp 4.7k)/mosfet..
check the battery n adapter [main power], in case of laptops..

if u r not a professional, always better to seek advise from ur system admin/vendor....\015\012
Lg computer crt power borad shoting
Repair Help & Product Troubleshooting for LG Studioworks 563N 15" CRT Monitor

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