Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
I changed the whole PSU, and it still flickers.
I understand that my next steps would be to change the CCFL inverter and the CCFLs themselves.
How do I locate these parts inside the LCD?
I found these items on eBay:
"New High-quality Notebook 22" Widescreen LCD CCFL Backlight Lamp Tube"
"1pc 4Lamp Backlight Universal Laptop LCD CCFL Voltage Inverter 10-30V For 15-26" "
They cost very little so I wouldn't mind trying them out. Would they...
mlitvin
Member
Last Activity: 07-02-2014, 04:57 PM
Joined: 04-05-2014
Location: Tel Aviv
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
What can I do about it?Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
So I received a replacement display driver board from aliexpress, plugged it in, and now the display works!
Only it flickers - pretty rapidly and tiresome to the eyes.
Anything to do about this?Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
When you say "plug in the backlights" do you mean the little white connector that goes to the control keys?
And backlight on/off pin is the ONOFF pin on the connector that goes to the display board?Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
Anyone?Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
So I followed the troubleshooting manual, and noticed that it says "When turning on the Power button...". So appears that there's a power button. It's an invisible touch button on the front panel, and I found it with help of [URL="http://forumserver.twoplustwo.com/48/computer-technical-help/where-power-button-samsung-syncmaster-t220hd-monitor-321111/"]this post[/URL].
Yes I was stupid, let's move on ok?
So now I probably got to the real problem. When connecting...Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
Amazing. At first glance it looks like Chinese to me, but I'll try to delve in the docs before bugging you guys further.Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
I'm still alive if someone worried
just took me some time to find that multimeter
So I've measured these with the display board and buttons connected:
*Digital pins:* (same on the power supply and the display board)
5.1v-GND = 5.27v (all combinations)
3.3v-GND = 3.3v
13v-GND = 13.61v
LED-GND = 0v
LED-5.1v = -2.94v
LED-3.3v = -1.05v
KEY1/KEY2v-GND = nearly 0v
KEY1/KEY2v-5.1v = 5.17v in average (about 0.1v difference between KEY1 and KEY2)...Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
F101 should have near-zero resistance too?
[B]Edit[/B]: of course, it's a fuse... What does the "T3.15AL" written next to it mean?Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
F101 should have near-zero resistance too?
[B]Edit[/B]: of course, it's a fuse... What does the "T3.15AL" written next to it mean?Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
F101 should have near-zeroLast edited by mlitvin; 04-06-2014, 06:38 AM.Leave a comment:
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Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
I've attached selected photos, additional close-ups are available [URL="http://goo.gl/VSSLxY"]here[/URL].
Can you elaborate on how I check the basic components?Re: How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
I've attached selected photos, additional close-ups are available [URL="http://goo.gl/VSSLxY"]here[/URL].
Can you elaborate on how I check the basic components?Re: How to troubleshoot a Samsung Syncmaster T220 that...Leave a comment:
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How to troubleshoot a Samsung Syncmaster T220 that doesn't power up?
Hi
When I connect the monitor to the AC outlet, I can't see anything change - no led turns on and the screen doesn't react. There is only some kind of a very silent click.
I've checked the capacitors on the power board, to the eye they seemed ok - no leaks, no bumps, all flat.
What should I do next?
I've been thinking to order one of [URL="http://www.aliexpress.com/item/T220G-T220-2243BW-2043NW-samsung-lcd-tv-power-supply-board-IP-49135B/1209993946.html"]these[/URL]. Is it a good idea, or might I be wasting money?
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