Another freebee set, I don't need.

[dieseljeep]

Another town-wide garage sale Saturday.
I hit the garage sales again this Saturday. I picked up a few items that I thought I could use.
An RCA DTV converter with the proper remote, half price after 12:00 PM.
A Zenith 9" cube type color set. Another weakness of mine, as I have a few, both remote and manual tuning. I feel they don't take up much space.
Finally, a 19" Sanyo, with proper remote, both clean, marked free. I asked the gal if it works. Reply, it works great!
Get it to my place, fired it up and a severe vertical underscan. It looked too even, regarding the picture shape. I didn't think, it was a fault in the vertical circuit.
Rather than look for component fault, I looked up the service menu access code and looked at all the parameters. The vertical size showed a Zero value, where all the others showed some kind of a value. Pressed the volume up and watched the results. The picture spread properly at the value 30.
I don't how that could have happened!