Having problems with your Computer Monitors ?

I have an IBM 9417-HB7 monitor that quit working for me. I took it apart and saw that 3 capacitors were blown, (820yf, 25v). I thought this would fix it but, all I get is the power light to come on. Can someone help me with this?


Answers :

I am seeing many of these 9417-Hx7 IBM with the 3 820uF caps bulging. Almost always the inverter driver FETs are shorted, and cause burn marks on the plastic cover. Sometimes the zener protection diode is also shorted. Ohm meter will show how many are shorted and need replaced.
\015\012Monitor Mike
Chances are their is a power regulator/resistor that has blow also, which caused the capacitors to overload and blow. Keep checking resistance/values up/down stream from the caps you replaced and you should find the culprit. Be careful if it's a high-voltage component - if it's shorted and you connect with it - well let's just say that would be a very bad thing.
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