LCD Monitor flashing

Pinchy · Aug 11, 2009, 12:22 PM

I got this 24" LCD Monitor here and have a problem with it.

When I got it, I hooked it up and I would get no input on the screen from any source (VGA/DVI/Component). The "no cable source" thing would come up with a weird flashing behind it (like the backlight flashing).

Anyway, I (stupidly) got someone to open the screen up and saw the inverter had two blown caps, so replaced them. Now when they opened the screen up, they forgot to undo a connection and it totally ripped off (see images).

As you can see, there are some pins broken completely. I managed to connect it back together, ignoring the four or five snapped pins.

So put the screen back together, not expecting much. Plugged it in and guess what, I get a picture! (Probably corrected from fixing the inverter). So I can see and run windows fine from this screen. Yet I still get the constant flashing and there are blotches around the screen with different coloured pixels.

I am thinking the blotches are appearing because of the dead pins. Now what gets me is the flashing. Is that a dead backlight or something?

To describe it in more depth: It flashes a few times a second, so its really quick. Its like a halogen dying. When it flashes, it DOESNT flash OFF, but flashes to a low brightness. When I turned the brightness from 100 down to 0, the flashing ALMOST COMPLETELY STOPPED (flashed once every minute or so).

So what I want to know:

1. Whats causing the flashing?
2. Would the funny blotches on the screen be from the pins?
3. What board is that that has been snapped (highlighted in red). What is it called? How hard are they to find?

I mean the pins dont bother me, as if worst comes to worst I can simply remove the pins completely and solder the wires straight onto the board. Its just, I dont want to do that if the flashing will still be there.

Thanks for whoever reads this post

coodiggy · Aug 12, 2009, 03:27 AM

What brand LCD?

Pinchy · Aug 12, 2009, 07:20 AM

The LCD's brand is Sun Microsystems, but the panel and most chips on the board are made by samsung.

Frick · Aug 12, 2009, 07:25 AM

The pins probably cause the coulor thing. Broken pins on VGA-connectors cause the same problem.

EDIT: Found that board on ebay:

http://cgi.ebay.com/Gateway-FPD2485W...QQcmdZViewItem

Pinchy · Aug 12, 2009, 03:14 PM

OMG how did you find that! Thanks HEAPS!

Now the flashing backlight....would that be an easy fix? I don't wanna spend like 50 + post if the backlight wont stop flashing

.

Thanks again, Frick.

Pinchy · Aug 13, 2009, 05:03 PM

bumpity.

no-one knows how the flashing backlight could be fixed?

Frick · Aug 13, 2009, 07:25 PM

I don't.

Pinchy · Aug 15, 2009, 12:44 AM

Quote:

Originally Posted by Frick

I don't.

Haha, dang.

Aug 11, 2009, 12:22 PM	#1
Pinchy Join Date: Apr 2006 Location: Sydney, Australia Posts: 4,650 (1.80/day) Thanks: 302 Thanked 360 Times in 344 Posts System Specs	LCD Monitor flashing I got this 24" LCD Monitor here and have a problem with it. When I got it, I hooked it up and I would get no input on the screen from any source (VGA/DVI/Component). The "no cable source" thing would come up with a weird flashing behind it (like the backlight flashing). Anyway, I (stupidly) got someone to open the screen up and saw the inverter had two blown caps, so replaced them. Now when they opened the screen up, they forgot to undo a connection and it totally ripped off (see images). As you can see, there are some pins broken completely. I managed to connect it back together, ignoring the four or five snapped pins. So put the screen back together, not expecting much. Plugged it in and guess what, I get a picture! (Probably corrected from fixing the inverter). So I can see and run windows fine from this screen. Yet I still get the constant flashing and there are blotches around the screen with different coloured pixels. I am thinking the blotches are appearing because of the dead pins. Now what gets me is the flashing. Is that a dead backlight or something? To describe it in more depth: It flashes a few times a second, so its really quick. Its like a halogen dying. When it flashes, it DOESNT flash OFF, but flashes to a low brightness. When I turned the brightness from 100 down to 0, the flashing ALMOST COMPLETELY STOPPED (flashed once every minute or so). So what I want to know: 1. Whats causing the flashing? 2. Would the funny blotches on the screen be from the pins? 3. What board is that that has been snapped (highlighted in red). What is it called? How hard are they to find? I mean the pins dont bother me, as if worst comes to worst I can simply remove the pins completely and solder the wires straight onto the board. Its just, I dont want to do that if the flashing will still be there. Thanks for whoever reads this post Attached Thumbnails __________________ mATX rig: TT Lanbox Lite, GA-G33M-DS2R, q9300, 4GB G.Skill Pi PC8000, 2x640GB Samsung F1's in RAID 0, LG 20x DVD+/RW, HIS IceQ HD4670 512MB, Gigabyte G-Power PRO, TT 450W TR2 RX Modular PSU HTPC: i-Cute iBox, GA-MA780GM-S2H, 4850e, 2GB G.Skill PC6400, 1x640GB WD SE16, Onboard HD3200, D-link XtremeN PCIe, Leadtek WinFast DVR3100 H Tuner, 450W Vantec PSU Server: Custom made case, EPIA Mini-ITX mobo, 1GHz VIA, 1GB PC2700 SO-DIMM, 1TB WD, Gigabit PCI LAN card, 60W 12V AC adapter

System Name:	UltraPC
Processor:	E8500 Core 2 Duo, 1333Mhz FSB, 3.16Ghz @ 4.5GHz (got into Windows @ 4.75GHz)
Motherboard:	ASUS P5Q-e
Cooling:	CPU Cooler - TT V14 Pro, 2x120mm CM Blue LED fans, 1x90mm CM Blue LED fan
Memory:	G.Skill Pi 4GB (2x2GB) Dual Channel DDR2 PC8000 (1000MHz), 5-5-5-15
Video Card:	Sapphire HD4850 512mb with ASUS EAH4850 BIOS
Hard Disk:	2x 500GB Seagate 7200.12 Raid 0
Optical Drive:	Dual layer 22x SATA II Samsung DVD burner
CRT/LCD Model:	Acer AL1912, 19" LCD screen
Case:	Thermaltake Soprano Black ATX case
Sound Card:	Onboard 7.1, Speakers - 5 + Sub + Monitor speakers
PSU:	Thermaltake 850W Toughpower Cable Management - Quad (2x18A and 2x30A) 12V rails
Software:	Win 7 Pro x64, MSN, CS:Source, etc etc

Aug 12, 2009, 07:20 AM	#3
Pinchy Join Date: Apr 2006 Location: Sydney, Australia Posts: 4,650 (1.80/day) Thanks: 302 Thanked 360 Times in 344 Posts System Specs	The LCD's brand is Sun Microsystems, but the panel and most chips on the board are made by samsung. __________________ mATX rig: TT Lanbox Lite, GA-G33M-DS2R, q9300, 4GB G.Skill Pi PC8000, 2x640GB Samsung F1's in RAID 0, LG 20x DVD+/RW, HIS IceQ HD4670 512MB, Gigabyte G-Power PRO, TT 450W TR2 RX Modular PSU HTPC: i-Cute iBox, GA-MA780GM-S2H, 4850e, 2GB G.Skill PC6400, 1x640GB WD SE16, Onboard HD3200, D-link XtremeN PCIe, Leadtek WinFast DVR3100 H Tuner, 450W Vantec PSU Server: Custom made case, EPIA Mini-ITX mobo, 1GHz VIA, 1GB PC2700 SO-DIMM, 1TB WD, Gigabit PCI LAN card, 60W 12V AC adapter

System Name:	UltraPC
Processor:	E8500 Core 2 Duo, 1333Mhz FSB, 3.16Ghz @ 4.5GHz (got into Windows @ 4.75GHz)
Motherboard:	ASUS P5Q-e
Cooling:	CPU Cooler - TT V14 Pro, 2x120mm CM Blue LED fans, 1x90mm CM Blue LED fan
Memory:	G.Skill Pi 4GB (2x2GB) Dual Channel DDR2 PC8000 (1000MHz), 5-5-5-15
Video Card:	Sapphire HD4850 512mb with ASUS EAH4850 BIOS
Hard Disk:	2x 500GB Seagate 7200.12 Raid 0
Optical Drive:	Dual layer 22x SATA II Samsung DVD burner
CRT/LCD Model:	Acer AL1912, 19" LCD screen
Case:	Thermaltake Soprano Black ATX case
Sound Card:	Onboard 7.1, Speakers - 5 + Sub + Monitor speakers
PSU:	Thermaltake 850W Toughpower Cable Management - Quad (2x18A and 2x30A) 12V rails
Software:	Win 7 Pro x64, MSN, CS:Source, etc etc

Aug 12, 2009, 07:25 AM	#4
Frick Fishfaced Nincompoop Join Date: Feb 2006 Location: Sweden Posts: 7,869 (2.98/day) Thanks: 1,074 Thanked 1,442 Times in 1,148 Posts System Specs	The pins probably cause the coulor thing. Broken pins on VGA-connectors cause the same problem. EDIT: Found that board on ebay: http://cgi.ebay.com/Gateway-FPD2485W...QQcmdZViewItem __________________ Typemachine: Acer Aspire One D250 \| Atom N280 1.6 Ghz \| 1GB DDR2 \| 160GB SATA \| 10.1' 1024 x 600 \| Lubuntu 12.10 Oldbox: HP D530 \| Pentium 4 2.8 Ghz \| 1GB DDR \| 40GB \| Windows XP "The 'gentle biker' look is overdone. I'm going for 'psycho hillbilly.' "

Aug 12, 2009, 03:27 AM	#2
coodiggy Join Date: Sep 2006 Posts: 426 (0.18/day) Thanks: 11 Thanked 22 Times in 22 Posts	What brand LCD?

System Name:	Ongoing scavanging
Processor:	Sempron 140
Motherboard:	MSI 760GM-P23 (FX)
Cooling:	Somesuch
Memory:	2GB DDR3
Video Card:	HD 2400 Pro
Hard Disk:	160GB + 1TB
Optical Drive:	Yes
CRT/LCD Model:	19" 1280 x 1024
Case:	Wossname
Sound Card:	On board
PSU:	Wattchamacallit
Software:	Stuff

Aug 12, 2009, 03:14 PM	#5
Pinchy Join Date: Apr 2006 Location: Sydney, Australia Posts: 4,650 (1.80/day) Thanks: 302 Thanked 360 Times in 344 Posts System Specs	OMG how did you find that! Thanks HEAPS! Now the flashing backlight....would that be an easy fix? I don't wanna spend like 50 + post if the backlight wont stop flashing . Thanks again, Frick. __________________ mATX rig: TT Lanbox Lite, GA-G33M-DS2R, q9300, 4GB G.Skill Pi PC8000, 2x640GB Samsung F1's in RAID 0, LG 20x DVD+/RW, HIS IceQ HD4670 512MB, Gigabyte G-Power PRO, TT 450W TR2 RX Modular PSU HTPC: i-Cute iBox, GA-MA780GM-S2H, 4850e, 2GB G.Skill PC6400, 1x640GB WD SE16, Onboard HD3200, D-link XtremeN PCIe, Leadtek WinFast DVR3100 H Tuner, 450W Vantec PSU Server: Custom made case, EPIA Mini-ITX mobo, 1GHz VIA, 1GB PC2700 SO-DIMM, 1TB WD, Gigabit PCI LAN card, 60W 12V AC adapter

Aug 13, 2009, 05:03 PM	#6
Pinchy Join Date: Apr 2006 Location: Sydney, Australia Posts: 4,650 (1.80/day) Thanks: 302 Thanked 360 Times in 344 Posts System Specs	bumpity. no-one knows how the flashing backlight could be fixed? __________________ mATX rig: TT Lanbox Lite, GA-G33M-DS2R, q9300, 4GB G.Skill Pi PC8000, 2x640GB Samsung F1's in RAID 0, LG 20x DVD+/RW, HIS IceQ HD4670 512MB, Gigabyte G-Power PRO, TT 450W TR2 RX Modular PSU HTPC: i-Cute iBox, GA-MA780GM-S2H, 4850e, 2GB G.Skill PC6400, 1x640GB WD SE16, Onboard HD3200, D-link XtremeN PCIe, Leadtek WinFast DVR3100 H Tuner, 450W Vantec PSU Server: Custom made case, EPIA Mini-ITX mobo, 1GHz VIA, 1GB PC2700 SO-DIMM, 1TB WD, Gigabit PCI LAN card, 60W 12V AC adapter

Aug 13, 2009, 07:25 PM	#7
Frick Fishfaced Nincompoop Join Date: Feb 2006 Location: Sweden Posts: 7,869 (2.98/day) Thanks: 1,074 Thanked 1,442 Times in 1,148 Posts System Specs	I don't. __________________ Typemachine: Acer Aspire One D250 \| Atom N280 1.6 Ghz \| 1GB DDR2 \| 160GB SATA \| 10.1' 1024 x 600 \| Lubuntu 12.10 Oldbox: HP D530 \| Pentium 4 2.8 Ghz \| 1GB DDR \| 40GB \| Windows XP "The 'gentle biker' look is overdone. I'm going for 'psycho hillbilly.' "

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