![]() ![]() The overheated, dried, and crystallized electrolyte will also try to force its way out the bottom. That’s the electrolyte that is supposed to facilitate charge transfer across the storage plates.Ĭapacitor C110 is bulging at the top, which means the electrolyte is trying to burst out of the vent. Notice the brown crusty discharge at the top of the capacitor? Here are the actual capacitors in the broken LCD monitors.īad electrolytic capacitors with residue bulging and lift Sometimes it’s really obvious when a capacitor has gone bad, but sometimes it is a bit more subtle. I took some pictures that I thought might be helpful to others in determining questionable capacitors that are installed on a circuit board, regardless of the type of device. So, don’t be dissuaded from trying it yourself. I was skeptical that it would be as easy as desoldering the blown capacitors with new parts, but in one evening I fixed two LCDs! There are lots of great web pages that include instructions on how to replace the aluminum electrolytic capacitors to repair the monitor. The root cause is a power supply failure due to bad caps. Similarly, my friend’s Samsung 206BW monitor wouldn’t even turn on anymore. My wife’s Samsung Syncmaster 226BW LCD monitor started failing by flickering, flashing, and blinking at power up. ![]()
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February 2023
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