| Electronics > Repair |
| Golden poker double up arcade machine schematic |
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| james_s:
I mean it's a dollar, what are you worried about, that someone might steal your dollar? They're not asking for your life savings. It looks like the tube is in good shape, it doesn't have any burn that I can see. Looks like you've got some tired capacitors in the monitor though. |
| poot36:
Based on the date codes on the chips I think it is from the mid 80's or so. I know that replacement caps would fix the odd looking screen at the top of the screen but would it fix the weird colors? |
| james_s:
I would try degaussing the tube, if the internal degaussing coil has failed then you'll get weird colors, that's called purity error. It can also happen if the tube has been dropped or hit causing the shadow mask to shift, or the deflection yoke could have been moved. |
| poot36:
I don't think it has a degaussing coil as I don't hear the sound that it would make when activated. I do have a big coil from a 27" tv that I scarped would that work or would I have to fold it in some way to make it small enough to work (I was thinking of twisting it 180 on one side and then folding it over on itself a few times but I don't know what that would do the magnetic field. Or would I have to make my own and run it off a low power AC transformer? |
| james_s:
You can absolutely fold up a larger coil into several turns of a smaller diameter, I've done that before. A salvaged coil from a TV will heat up pretty fast if you connect it straight to the line since they normally only operate for half a second or so but if you put an incandescent bulb in series that will limit the current. The little degaussing coils used in small monitors like this normally don't really make much noise though. |
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