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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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lcd monitor problem
My 15 inch HP lcd monitor has a red tint to the screen...any
adjustments or trouble shooting hints please......thanks |
#2
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lcd monitor problem
Possibly a bad VGA cable of bad ccfl lamps.
I'd bet on VGA cable. - Mike "lurk" wrote in message om... My 15 inch HP lcd monitor has a red tint to the screen...any adjustments or trouble shooting hints please......thanks |
#3
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lcd monitor problem
Thank you Mike....that gives me a start....I don't know how they generate
the color on these.....I'd like to get a how to repair book on these....not to many guys know anything about them.....thanks again "Michael Kennedy" wrote in message . .. Possibly a bad VGA cable of bad ccfl lamps. I'd bet on VGA cable. - Mike "lurk" wrote in message om... My 15 inch HP lcd monitor has a red tint to the screen...any adjustments or trouble shooting hints please......thanks |
#4
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lcd monitor problem
Well there isn't much to most LCD monitors from my experience.. I've just
started reparing them recently and most problems are related to bad capacitors or bad lamps. The reason you don't find much info on them is there isn't nearly the amount of components inside one compared to a CRT monitor. Usually all they have in them is an inverter board wich powers the flurescent lamps in the lcd panel and a control board which handles video signal processing.. - Mike "lurk" wrote in message . com... Thank you Mike....that gives me a start....I don't know how they generate the color on these.....I'd like to get a how to repair book on these....not to many guys know anything about them.....thanks again "Michael Kennedy" wrote in message . .. Possibly a bad VGA cable of bad ccfl lamps. I'd bet on VGA cable. - Mike "lurk" wrote in message om... My 15 inch HP lcd monitor has a red tint to the screen...any adjustments or trouble shooting hints please......thanks |
#5
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lcd monitor problem
Is there any books out on the repair in general?? and the lamps I
can google and see what they look like .....thanks again "Michael Kennedy" wrote in message . .. Well there isn't much to most LCD monitors from my experience.. I've just started reparing them recently and most problems are related to bad capacitors or bad lamps. The reason you don't find much info on them is there isn't nearly the amount of components inside one compared to a CRT monitor. Usually all they have in them is an inverter board wich powers the flurescent lamps in the lcd panel and a control board which handles video signal processing.. - Mike "lurk" wrote in message . com... Thank you Mike....that gives me a start....I don't know how they generate the color on these.....I'd like to get a how to repair book on these....not to many guys know anything about them.....thanks again "Michael Kennedy" wrote in message . .. Possibly a bad VGA cable of bad ccfl lamps. I'd bet on VGA cable. - Mike "lurk" wrote in message om... My 15 inch HP lcd monitor has a red tint to the screen...any adjustments or trouble shooting hints please......thanks |
#6
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lcd monitor problem
Thus spake lurk:
My 15 inch HP lcd monitor has a red tint to the screen...any adjustments or trouble shooting hints please......thanks Your CCFL lamp has reached "end-of-life". They go pink when they are old. jkl lamps.com has lamps and some links to articles showing how to do this. It's pretty straightforward, but not for the faint-of-heart. http://jkllamps.com/index.cfm?action=fam&tid=2&fID=45 Good luck, -- DaveC This is an invalid return address Please reply in the news group |
#7
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lcd monitor problem
Here are some links to help you out..
This appears to be a quite long article, but has no pictures which makes it not so good. http://iantha.vectorstar.net/ccfl.html The stright bulb on this page looks like your typical ccfl lamp. http://www.ccfl-inverter.com/html_en...cklighting.htm You can buy ccfl lamps at www.mouser.com or http://www.lcdpart.com/ (they have instructions on how to do it with pictures) Yet another article.. http://inventgeek.com/Projects/Backl.../overview.aspx Just google LCD backlight or CCFL backlight. You can somtimes find free service manuals for whatever monitor your working on at http://www.eserviceinfo.com/ One word of caution if your changing ccfl lamps.. They BREAK VERY EASY if your not careful. - Mike "lurk" wrote in message om... Is there any books out on the repair in general?? and the lamps I can google and see what they look like .....thanks again "Michael Kennedy" wrote in message . .. Well there isn't much to most LCD monitors from my experience.. I've just started reparing them recently and most problems are related to bad capacitors or bad lamps. The reason you don't find much info on them is there isn't nearly the amount of components inside one compared to a CRT monitor. Usually all they have in them is an inverter board wich powers the flurescent lamps in the lcd panel and a control board which handles video signal processing.. - Mike "lurk" wrote in message . com... Thank you Mike....that gives me a start....I don't know how they generate the color on these.....I'd like to get a how to repair book on these....not to many guys know anything about them.....thanks again "Michael Kennedy" wrote in message . .. Possibly a bad VGA cable of bad ccfl lamps. I'd bet on VGA cable. - Mike "lurk" wrote in message om... My 15 inch HP lcd monitor has a red tint to the screen...any adjustments or trouble shooting hints please......thanks |
#8
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lcd monitor problem
"Michael Kennedy" wrote in message
news Here are some links to help you out.. This appears to be a quite long article, but has no pictures which makes it not so good. http://iantha.vectorstar.net/ccfl.html The stright bulb on this page looks like your typical ccfl lamp. http://www.ccfl-inverter.com/html_en...cklighting.htm You can buy ccfl lamps at www.mouser.com or http://www.lcdpart.com/ (they have instructions on how to do it with pictures) Yet another article.. http://inventgeek.com/Projects/Backl.../overview.aspx Just google LCD backlight or CCFL backlight. You can somtimes find free service manuals for whatever monitor your working on at http://www.eserviceinfo.com/ One word of caution if your changing ccfl lamps.. They BREAK VERY EASY if your not careful. - Mike Mike, speaking of parts, have you found a source for inverter transformers capable of supporting 2 19" lamps? I'm guessing the transformers will have to be rated at about 14 to 16 watts to handle the bigger lamps. Digikey has inverter transformers but they seem to stock only the smaller ones which are good for screens up to 15". Thanks, Dave |
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