The NEW Build Your Own Arcade Controls
Main => Monitor/Video Forum => Topic started by: Dacasks on April 29, 2017, 08:41:11 am
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What it could be? Caps? Anyway to solve it? It's a JVC broadcast monitor. My PVM blew and I can't find any technician to repair it :/
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do you mean focus is drifting?
if so then either flyback focus pot just needs a tweek or is faulty,bad connection in crt socket or bad tube
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do you mean focus is drifting?
if so then either flyback focus pot just needs a tweek or is faulty,bad connection in crt socket or bad tube
Hi, thanks for answering!
I wouldn't say the focus is drifting... more like the image losing it's sharpness.
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This happens as flybacks age, sometimes. With arcade flybacks, anyway. Cracks in the casing or insulation breakdown mean that as things warm up the focus swims a bit. In some cases the image will be stable, and always in the same place - so you leave the cabinet on for 5-10mins and adjust the focus for that point. Other times the flyback will settle on a different point each time, and there's nothing you can do but adjust the focus every time you turn the cab on, but after it warms up - assuming this is the problem. It sounds like it, but this a broadcast set so I can't say for sure.
Some flybacks become a fire hazard as this gets worse, be aware.