Having problems with your Xerox XG-91D 19" LCD Monitor ?

Would flicker then die

\015 I decided to try using a hair dryer to help heat this unit up and it works like a champ, screen now stays on is clear etc. By raising my phase from it's default to 18 or setting my refresh rate to 70 will that help this unit to generate just a bit more heat? I have it set so that it dosen't go off (hibernate) so I won't have a start problem. Any other ideas?\015\012Thanks\015

Answers :

You have a bad capacitor on your power supply board. Take unit apart and look for some blown or bulging capacitors on the P/S board (the tan one) they look like little barrels wiht a cross embossed on top. If the top is split or looks like it is about to, you can replace them easily with a soldering iron, heat the solder and pull the cap out one side at a time. the install is just as easy, put it it phased properly (it has a negative and a positive pin) and heat pin and pad together until solder flows onto them, not more than 5 seconds. Sometimes you can use the solder that is already on there. They are about .35 cents online or 1.25 at radio shack, look for the large ones that say 470 microfarad at 25V and 105C. If you cant find that particular one, you can use a 35V model but stay with the 105C rating so it doesnt fail under the heat of the P/S. Of course you should always take the bad one with you if you are shooping for a new one. You may have 8 bulged caps on your board, replace them all. repair shop should do the soldering for you for a few bucks if you give them the parts and watch him. Applies to most flickering or dead LCD monitors. Other thing to check is the small black IC chips on the logic board to see if any are burned or blistered. That is more involved but is not impossible.
More than likely there are some bad caps in the power supply. The backplane power supply and main power supply caps tend to give problems in many of these types of monitors.
\015\012You should get it serviced before the cap goes completely defective. If it goes opened or shorted, depending on many circumstances, other damage can happen. This will increase the cost of the repair.
\015\012Jerry G.
Repair Help & Product Troubleshooting for Xerox XG-91D 19" LCD Monitor

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