When one of the lamps the invertor will shutdown when it senses the bad ccfl . I have found that a .01 uf 1000v cap can be subsituted for the lamp and the invertor will continue to function . On displays with 4 lamps the missing lamp is not noticable .
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Re: failed ccfl
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Re: failed ccfl
Sorry I should made the post clearer . I was trying to pass on some info that may be helpfull .Comment
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--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
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Re: failed ccfl
Hmmm doesn't sound like too good an idea to me. How do you control the current?36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far....Comment
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For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: failed ccfl
I think perhaps this would be good for a temporary workaround just to test the other ccfls? Maybe I should go back and retest my lcd to see if all the lamps are really bad or just one or two. Could make quite a difference in repair costs. Thanks for your post.Comment
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Re: failed ccfl
I cliped the connector and soldered the cap to the connector leads and used heat shrink tubing for installation . I ran the monitor for over an hour and the cap remained cool . The display was a 22 inch with 4 lamps I could not see any degradation of the display .Comment
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Greetings everyone,
I have a HANNSG Hi221 monitor that exhibits two seconds to black issues (backlight goes off, display is still on as confirmed by shining a flashlight on it) with some additional oddities...
The monitor failed on me with a standard "2 seconds to black" some time ago prompting me to initially replace most of the electrolytic capacitors (some of them were bulging/leaking).
Things kinda sorta worked for a night, then the problem returned along with some flickering and "buzzing" noises.
Upon closer inspection... -
Hi,
This monitor previously is my main working monitor which i have been using for 8~9 years. Yesterday, when i switched on my pc from fresh to power on, the monitor is just black no display. I started dismantle to look inside the monitor power board but nothing looks suspicious or burnt. So i took my external ccfl inverter to try to power the monitor ccfl lamps which consisted of 2 lamps on upper part and 2 lamps on the lower part.
Found out the upper ccfl lamp which is supposed to connect to cn304 on the power board did not light up. Then i installed a used working... -
Hoping someone here can put me on the right track. I'm trying to troubleshoot/flowchart the "internal projector error" on my newly acquired Facebook Marketplace bought Epson 5040UB projector (3LED, not DLP). Owner said it needed new lamp, actually error code blink pattern indicates "Internal Projector Error, call Epson support". Unit is out of warranty as of 8/19
Here's what happens:
1) Power on
2) Blue power indicator lights and the lens cover motor opens the lens cover, light fan noise heard
3) Blue status light flashes for appx 4 minutes... -
Hi All.
Does anyone have any reference materials or something I can use to try troubleshooting a BenQ TH681? Google unfortunately has turned up zip. I did find a service manual for a W series BenQ but that is pretty much useless, it's more a glorified user manual. A list of voltages would be great as I suspect my mainboard is faulty, the colour wheel voltage is not dipping like it should.
The one I am troubleshooting now was originally overheating after a lamp replacement. It originally would take 2 minutes or so for it to shut off and blink the temp and lamp lights... -
Hello
I have a problem with a samsung 943B, initially thinking it was a power problem i replaced the power board which is a bn44-00082e, i had a flashing of the ccfl lamps and the monitor would not start, i replaced the power board and the problem is remained, thinking they were the lamps I tested them with a ccfl lamp tester and they are all working, at this point I think it is the main board which is a BN41-01172B, my question is, before making a further purchase there is a way to turn on the lamps without the main board to exclude that the new power board is also broken? Of course without...
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