Question about Sharp LL-172CB (Black) 17 in. Flat Panel LCD Monitor
I work as a tech for an educational institution and we have numerous Gateway (brand) FPDs that have either lamp or inverter issues. I would love to repair these myself. Do you know of any good resources so that I can learn to do so?
Thanks very much!!!
Fun projects, I have fixed a few LCD monitors. Most of the issues are Bad CCFL's or the Inverter board. You can buy CCFL's all over the web and ebay. Just do a search on google. There are other project people have done to replace the CCFL's with LED's.
The inverter is easy for me, I have an electronics background. 12VDC going in and AC coming out. 3 major parts to the inverter. Circuit protection, most likely a fuse, can be surface mount. Transistors, which convert the DC current to AC current, should be 2 of them to perform this task. Transformer, this is used to step-up the voltage. 12V is not enough to drive the lamps, you need something like 50VAC, the transformer will take care of that. Transformers rarely go bad. The components that take the most hits is the transistors or the fuses. It could be other IC's but, look for a fuse first, its the cheapest and easiest.
I can not say this enough, GOOGLE, GOOGLE, and GOOGLE. Very good search engine to research just about anything.
So if you are up to it, learn some soldering and basic electronics.
Posted on Nov 14, 2007
Tips for a great answer:
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series
Aug 20, 2011 | Gateway FPD2275W LCD Monitor
Oct 23, 2010 | Gateway Computer Monitors
May 19, 2010 | Gateway FPD1975W 19" LCD Monitor
Apr 26, 2010 | Gateway FPD2275W LCD Monitor
Apr 21, 2010 | Gateway 19" Widescreen Flat Panel TFT LCD...
Apr 20, 2010 | Gateway FPD2275W LCD Monitor
Feb 22, 2010 | Gateway FPD1960 19" Flat Panel LCD Monitor
Feb 02, 2010 | Gateway FPD 1730 17 in. Flat Panel LCD...
Sep 18, 2009 | Sceptre x22wg Gamer Monitor
Jun 20, 2009 | Computer Monitors
Oct 28, 2009 | Sharp LL-172CB (Black) 17 in. Flat Panel...
Apr 22, 2009 | Sharp LL-172CB (Black) 17 in. Flat Panel...
121 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: