Hello, I was wondering if anyone had a failed capacitor on the output of the inverter transformer? My transformer gets way too hot even with other tubes which I know work fine and the capacitors are connected in parallel to the transformer output. If anyone has experience on this please reply.
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High voltage inverter capacitors
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Re: High voltage inverter capacitors
You are talking about the Ceramic ballast cap, the small high Voltage blue cap rated around 3K ~ 5KV?
They do fail and will show leakage resistance or just shorted out, it will be hard to test using simple Ohm meter because the working Voltage the caps is exposed to is from 500 ~ 2KV or more.
You have to inverter transformers, correct? If that is the cased you can then just swap the caps over and see if the problem will follow.Never stop learning
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Re: High voltage inverter capacitors
I have one transformer for both CCFL tubes. And yes i'm talking about those blue 3pf 6kv capacitors. I measured it using an lcr meter but the resistance Is around 3 M ohm. My transformer is heating up even with working tubes on the output so it must be something in between.
I am also studying the schematic of the inverter circuit but the only things that could fail to make it this hot are two SMD ceramic 4,7uF/25 volt caps.
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Re: High voltage inverter capacitors
If you have low value capacitors on this board it probably would not hurt to replace them9 PC LCD Monitor
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