1986 Hitachi 25'' console.

[Dreamsbeard]

Wow, that's great!
Thanks!

[Dreamsbeard]

Just a quick followup on this set ; I never had to do the convergence on it. After I "clean and balanced" it, all I did was to redo grayscale, and all the gun went back into almost perfect convergence...

I suppose that the clean and balance procedure ironicly "debalanced" the 3 guns and that might have resulted in misconvergence (great knowers here might want to correct me on that one of course )

Now another question : the image on the tv is pulling ever so slightly on the right, thus cutting a bit of the picture. I went around to find an horizontal centering pot, but found none. Is it possible that my TV lacks the needed ajustment to do so?

Thanks!

[zeno]

Originally Posted by Dreamsbeard

Just a quick followup on this set ; I never had to do the convergence on it. After I "clean and balanced" it, all I did was to redo grayscale, and all the gun went back into almost perfect convergence...

I suppose that the clean and balance procedure ironicly "debalanced" the 3 guns and that might have resulted in misconvergence (great knowers here might want to correct me on that one of course )

Now another question : the image on the tv is pulling ever so slightly on the right, thus cutting a bit of the picture. I went around to find an horizontal centering pot, but found none. Is it possible that my TV lacks the needed ajustment to do so?

Thanks!

First, all sets are built to overscan just a little. Also these days you
gotta watch what you are feeding them.
If you got one put a cross hatch pattern up & be sure the lines are straight.
If not you have a pincushion (pin) problem.
Look for any control or jumper marked horz size, width, or lin.
If it has a horz hold move that a little.
Power supply can do it but usually causes random shut-down & other
symptoms.
If you can check the current draw. Should be about .75 amps with
a normal picture.
If there is a true problem its probably a 'lytic going bad.

73 Zeno

[Jon A.]

I've noticed late 80s/early 90s RCA-built sets, i.e. my 1989 GE, overscan quite a bit if no signal is present. The channel display goes almost completely off the screen.

[Dreamsbeard]

Found a jumper (horizontal cent.)that was marked : N or R , the selector was on the R pin...so I tried the N one...and that solved the problem!

Thank Zeno!

[Dreamsbeard]

Originally Posted by Jon A.

I've noticed late 80s/early 90s RCA-built sets, i.e. my 1989 GE, overscan quite a bit if no signal is present. The channel display goes almost completely off the screen.

Did not notice if the overscan was worst when there was no signal, but it was definitly bothersome on DVD/VHS signal. Glad to be rid of it!