Overclock.net › Forums › Components › Monitors and Displays › Need some help with a bad AOC monitor
New Posts  All Forums:Forum Nav:

Need some help with a bad AOC monitor

post #1 of 10
Thread Starter 
Hey everyone, I have an AOC monitor that belonged to my brother, used to work fine, then it started flickering, which we seemed to temporarily solve by turning the monitor off/on. Its a 20" LCD btw. Anyway, after a few days, this flicker would not go away and it would basically make the monitor go into standby, regardless of source plug (vga/dvi on any video card). So now, when turning on, it will flicker 3 times then go to standby. Opened it up and did some thorough cleaning for any dust bunnies but still, same symptoms. If anyone can shed some light on what might be the problem based on what i've described?
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
post #2 of 10
Sounds like a bad weld somewhere near main power route.
Inconsistent current gets completely cut when the seal heats up, expands and break the link.
Then when it cools off and retracts, it makes some contact again, until next power-up.

Try to inspect it closely, using magnifying glass if you can. Look for cracked solder welds, re-solder if you find any.
Else, if it is possible, you can take the matrix and plastic frame off, leaving the electronics only, and bake them for about 7-8 min in pre-heated to 180C-190C oven.
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #3 of 10
i'd bet you a snickers bar you have one or multiple blown capacitors on the monitors board. Happened to mine replaced the popped caps and my monitor is working fine now
Blue Steel
(15 items)
 
i5 2500k build
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Biostar TZ68K+ XFX R7950 Double Dissipation Corsair Vengeance 8gig 
Hard DriveOptical DriveOSMonitor
Seagate No Name Drive Windows 7 64bit Home Premium Samsung Syncmaster2232BW 22inch 
KeyboardPowerCaseMouse
1991 Packard Bell Mechanical Keyboard( weighs a... Rosewill 630 Watt Apevia X-Plorer Cyborg R.A.T. 7 
Mouse PadAudioOther
Black standard pad. Plantronics Headset Hyper 212+ 
CPUMotherboardGraphicsRAM
i5 2500k@4.3Ghz ASUS P8Z68-V/Gen 3 PNY GTX560 ti Corsair Vengeance 8gig 
Hard DriveOptical DriveCoolingOS
Seagate ASUS Hyper 212+ Windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VS228 Logitech wireless Rocketfish RF-700WPS 700 Watts Haf 912 
MouseMouse PadAudio
Cyborg R.A.T. 7 Massive blue cloth pad Boston speakers from 1997 
  hide details  
Reply
Blue Steel
(15 items)
 
i5 2500k build
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Biostar TZ68K+ XFX R7950 Double Dissipation Corsair Vengeance 8gig 
Hard DriveOptical DriveOSMonitor
Seagate No Name Drive Windows 7 64bit Home Premium Samsung Syncmaster2232BW 22inch 
KeyboardPowerCaseMouse
1991 Packard Bell Mechanical Keyboard( weighs a... Rosewill 630 Watt Apevia X-Plorer Cyborg R.A.T. 7 
Mouse PadAudioOther
Black standard pad. Plantronics Headset Hyper 212+ 
CPUMotherboardGraphicsRAM
i5 2500k@4.3Ghz ASUS P8Z68-V/Gen 3 PNY GTX560 ti Corsair Vengeance 8gig 
Hard DriveOptical DriveCoolingOS
Seagate ASUS Hyper 212+ Windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VS228 Logitech wireless Rocketfish RF-700WPS 700 Watts Haf 912 
MouseMouse PadAudio
Cyborg R.A.T. 7 Massive blue cloth pad Boston speakers from 1997 
  hide details  
Reply
post #4 of 10
Quote:
Originally Posted by Jaxis View Post

i'd bet you a snickers bar you have one or multiple blown capacitors on the monitors board. Happened to mine replaced the popped caps and my monitor is working fine now

Yes thumb.gif
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #5 of 10
Thread Starter 
well, just popped everything, and no blow capacitors, but I got the idea from another vid of a samsung LCD with the same issue. But alas, im not so lucky. However I do notice a ton of this "white" paste covering several of the components on the board that manages the power, where said capacitors are located, but the capacitors look fine, no bulging at all. What is that white stuff?
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
post #6 of 10
the white paste is probably the stuff inside the capacitors.. are the tops of the caps buldging or domed?
Blue Steel
(15 items)
 
i5 2500k build
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Biostar TZ68K+ XFX R7950 Double Dissipation Corsair Vengeance 8gig 
Hard DriveOptical DriveOSMonitor
Seagate No Name Drive Windows 7 64bit Home Premium Samsung Syncmaster2232BW 22inch 
KeyboardPowerCaseMouse
1991 Packard Bell Mechanical Keyboard( weighs a... Rosewill 630 Watt Apevia X-Plorer Cyborg R.A.T. 7 
Mouse PadAudioOther
Black standard pad. Plantronics Headset Hyper 212+ 
CPUMotherboardGraphicsRAM
i5 2500k@4.3Ghz ASUS P8Z68-V/Gen 3 PNY GTX560 ti Corsair Vengeance 8gig 
Hard DriveOptical DriveCoolingOS
Seagate ASUS Hyper 212+ Windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VS228 Logitech wireless Rocketfish RF-700WPS 700 Watts Haf 912 
MouseMouse PadAudio
Cyborg R.A.T. 7 Massive blue cloth pad Boston speakers from 1997 
  hide details  
Reply
Blue Steel
(15 items)
 
i5 2500k build
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Biostar TZ68K+ XFX R7950 Double Dissipation Corsair Vengeance 8gig 
Hard DriveOptical DriveOSMonitor
Seagate No Name Drive Windows 7 64bit Home Premium Samsung Syncmaster2232BW 22inch 
KeyboardPowerCaseMouse
1991 Packard Bell Mechanical Keyboard( weighs a... Rosewill 630 Watt Apevia X-Plorer Cyborg R.A.T. 7 
Mouse PadAudioOther
Black standard pad. Plantronics Headset Hyper 212+ 
CPUMotherboardGraphicsRAM
i5 2500k@4.3Ghz ASUS P8Z68-V/Gen 3 PNY GTX560 ti Corsair Vengeance 8gig 
Hard DriveOptical DriveCoolingOS
Seagate ASUS Hyper 212+ Windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VS228 Logitech wireless Rocketfish RF-700WPS 700 Watts Haf 912 
MouseMouse PadAudio
Cyborg R.A.T. 7 Massive blue cloth pad Boston speakers from 1997 
  hide details  
Reply
post #7 of 10
When mine blew.. several sprayed out the foamy stuff inside the caps.
Blue Steel
(15 items)
 
i5 2500k build
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Biostar TZ68K+ XFX R7950 Double Dissipation Corsair Vengeance 8gig 
Hard DriveOptical DriveOSMonitor
Seagate No Name Drive Windows 7 64bit Home Premium Samsung Syncmaster2232BW 22inch 
KeyboardPowerCaseMouse
1991 Packard Bell Mechanical Keyboard( weighs a... Rosewill 630 Watt Apevia X-Plorer Cyborg R.A.T. 7 
Mouse PadAudioOther
Black standard pad. Plantronics Headset Hyper 212+ 
CPUMotherboardGraphicsRAM
i5 2500k@4.3Ghz ASUS P8Z68-V/Gen 3 PNY GTX560 ti Corsair Vengeance 8gig 
Hard DriveOptical DriveCoolingOS
Seagate ASUS Hyper 212+ Windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VS228 Logitech wireless Rocketfish RF-700WPS 700 Watts Haf 912 
MouseMouse PadAudio
Cyborg R.A.T. 7 Massive blue cloth pad Boston speakers from 1997 
  hide details  
Reply
Blue Steel
(15 items)
 
i5 2500k build
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Biostar TZ68K+ XFX R7950 Double Dissipation Corsair Vengeance 8gig 
Hard DriveOptical DriveOSMonitor
Seagate No Name Drive Windows 7 64bit Home Premium Samsung Syncmaster2232BW 22inch 
KeyboardPowerCaseMouse
1991 Packard Bell Mechanical Keyboard( weighs a... Rosewill 630 Watt Apevia X-Plorer Cyborg R.A.T. 7 
Mouse PadAudioOther
Black standard pad. Plantronics Headset Hyper 212+ 
CPUMotherboardGraphicsRAM
i5 2500k@4.3Ghz ASUS P8Z68-V/Gen 3 PNY GTX560 ti Corsair Vengeance 8gig 
Hard DriveOptical DriveCoolingOS
Seagate ASUS Hyper 212+ Windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VS228 Logitech wireless Rocketfish RF-700WPS 700 Watts Haf 912 
MouseMouse PadAudio
Cyborg R.A.T. 7 Massive blue cloth pad Boston speakers from 1997 
  hide details  
Reply
post #8 of 10
Thread Starter 
Doesn't look like it came from the main caps, but, well it looks like it came from this, that yellow square box thingy above the caps, like in this pic

333



AAAAND i "think" from the box thats RIGHT next to the power outlet, the blackish one cept mine has no tape and the coils are exposed

333
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
post #9 of 10
Thread Starter 
Nevermind, i'll just junk it.
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
Boinzy
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k 4.2Ghz Gigabyte GA-Z77-DS3H  XFX R9 280x TDFD 3GB G.SKILL Ripjaws X Series 8GB (2 x 4GB) 
Hard DriveHard DriveOptical DriveCooling
TOSHIBA X300 HDWE160XZSTA 6TB 7200 RPM Samsung 850 Evo 250GB Asus DRW-24B1ST Cooler Master 212+ 
OSMonitorKeyboardPower
Windows 10 Pro 64 bit Acer GN246HL Nixeus Moda Pro Mechanical Keyboard Cherry MX B... Antec Earthwatts 650W 
CaseMouseAudio
Thermaltake Chaser A41 Logitech G400 Bose Companion 2 
  hide details  
Reply
post #10 of 10
The white stuff is ordinary glue, nothing wrong about it smile.gif
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Monitors and Displays
Overclock.net › Forums › Components › Monitors and Displays › Need some help with a bad AOC monitor