[SOLVED] K4600 issue after capkit, slanted picture

[jlweatherly]

K4600 that was in unknown condition after being stored for years, had vertical collapse when I tested it. Decided to do to capkit since I had one on hand. Afterwards, this is the best I could get it to look like while fiddling with the sync pots.



This image is relatively static for how garbled it looks. Even though its appears un-synched, it's not moving, just obviously not a good picture.

B+ voltage is 127.4
Pulled black level pot and tested it out of circuit, remounted on the back.
Screen pot on neck board works for adjusting overall brightness.
Tried both V+ / H+ & V- / H- sync signals from TPG, no differences
My 4600 must be an early model since I'm missing the jumper wires for vertical/horizonal positioning
Already removed & reflowed solder for all interface boards & headers.

Any ideas where or what I should check next?

 

[jlweatherly]

http://www.therealbobroberts.net/slanted.html

Making me think it's the H Hold at L351, but none of my tools are long enough to get in there safely while it's running.

 

[jlweatherly]

Yep, adjusted L351 and was able to get a good picture after:

 

[mecha]

did you resolder the card interconnects and header pins also? (you do this with the cards installed or else the pins will move) I ask cause vertical collapse can be caused by the V. Hold not making connection with the deflection board due to the cracked solder.

 

[jlweatherly]

Yep, was sure to do that as well. Reflowed every header & pin on main board & interface cards.

I actually did it with the cards out and had one pin start to move on me. But, luckily I was able to get it back into proper position. It wasn't out of alignment, but had slipped straight through partway so the pin was no longer fully seated. Heating it back up and pushing it back into place was good enough to resolve. Only burned my fingertip twice in the process!

Next question. If I wanted to add in the jumper wire for horizontal positioning, is there anything more to do than find the appropriate place to make the connection on the board? Any other components need changing?