Re: DAC-19M009 Problems
Hi Toasty,
I've had my Chimei 22" monitor running since 2006 till 2015. It recently died (screen was getting black in a few minutes, then seconds). I found that some of the caps were totally bad - I have an ESR meter and they had an internal resistance over 100 ohm (while typically they are under 0.5 ohm). The big capacitor 120uF/400V was also completely stuffed (internal resistance over 100 ohm). After replacing the capacitors, the screen still turns off after a few seconds and I can hear some corona discharges in the inverter transformers (marked 28740001100 MB 633A). Now I am trying to apply some PCB laquer on the windings of these transformers - with some luck the shorted turns will get insulated.
Nick
Originally posted by Toasty
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I've had my Chimei 22" monitor running since 2006 till 2015. It recently died (screen was getting black in a few minutes, then seconds). I found that some of the caps were totally bad - I have an ESR meter and they had an internal resistance over 100 ohm (while typically they are under 0.5 ohm). The big capacitor 120uF/400V was also completely stuffed (internal resistance over 100 ohm). After replacing the capacitors, the screen still turns off after a few seconds and I can hear some corona discharges in the inverter transformers (marked 28740001100 MB 633A). Now I am trying to apply some PCB laquer on the windings of these transformers - with some luck the shorted turns will get insulated.
Nick
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