Quote:
Originally Posted by BenM86
Curious if anyone else has had this issue and knows if it’s something that can be fixed/adjusted.
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Smearing to the right of bright objects is an incredibly common and ubiquitous symptom that can point to a wide range of faults.
Worst case the tube is shot and the smearing is caused by excessive voltages driving the video output IC too hard.
Essentially, the output IC will have a maximum voltage
range it can operate in, for example some voltage that represents the most dark thing on the screen (positive voltage) and something else that represents the brightest thing on the screen (ideally close to zero in most cases). If the tube is too worn out, you will have to increase that range because the cathodes will require you push a more negative-going voltage to achieve a bright enough picture to see. When that happens, you can see smearing to the right as the video IC goes into "clipping."
The effect is very similar to audio clipping, but it often manifests in the video in this stretching out of the video to the right of the brightest objects because the brightest objects represent the most negative-going voltages on the raster.
Otherwise, it's capacitors somewhere. If I had to guess in the power supply or the deflection area. I don't know JVC set too well, but if it was my set and I was serious about it, I would just go through and test them all. It would probably take a couple evenings.
You can also check voltages on the schematic and see if anything is off. That would lead you to most faults of the kind you are looking at.