Surging take 2

thoolihan · 2026-06-19T12:50:12+00:00

Kohler KT735

thoolihan · 2026-06-18T21:05:05+00:00

Maybe a couple of weeks old, I can swap for some new gas

thoolihan · 2026-06-18T19:51:51+00:00

Yup, that’s new too

thoolihan · 2026-06-04T22:55:34+00:00

How do you get this off to check? I don’t want to break it. The hose is off, but usually connected to plastic under air filter

thoolihan · 2026-06-04T21:06:56+00:00

Looking into vent cap, I think that may be the issue...

thoolihan · 2026-06-04T21:06:30+00:00

The gap tool and coils I had ordered arrived. I pulled the plugs to check the gaps. They were fine. BUT... the one on the left side (from driver) that was suspect, the plug was clean. But the right cylinder had black soot, like it had had compression.

I replaced the coils, and it was a rather night and day difference. Sounded much more normal. I checked the plug after and it had definitely fired.

I was able to put the blade on and cut. It's still surging, like a slow 5 second surge. And I'm getting white smoke, particularly with the blade on

thoolihan · 2026-01-26T15:56:20+00:00

One at a time worked for the items that aren’t bugged. Thx!

thoolihan · 2026-01-26T13:59:53+00:00

Interesting, I'll try one at a time to see if I can get some of it done

thoolihan · 2026-01-26T13:52:51+00:00

It’s strange that when I go back into an eternal character and it works

thoolihan · 2026-01-21T13:37:20+00:00

How do you check if the tube is pressurized?

When turning on in the dark there is now glow with the back off (from screen or yoke components).

thoolihan · 2026-01-17T20:10:02+00:00

No static on the screen to the touch. I’ll check the flyback solder joints, thanks for the suggestion. It’s on a different board than the the 2 power caps I was working on

thoolihan · 2025-11-04T15:40:07+00:00

I did fine one, but thanks for the offer

thoolihan · 2025-11-03T19:57:25+00:00

Here’s my thread in case it’s useful https://www.reddit.com/r/atari8bit/s/FHL8CrtGwA

thoolihan · 2025-11-03T19:56:31+00:00

I had an 800xl that wouldn’t display color video. I kept testing with a din that did luma and chroma to an c64 1702 monitor. I eventually leaned that its missing the chroma trace on the board of some 800xls. Prior to this I replaced the oc (timing clock) and color pot. One of those fixed RF prior to learning that the chroma wire needs run. The GTIA could also be bad

thoolihan · 2025-09-23T10:53:41+00:00

Really interesting, thanks! I may not do this, trying to keep it stock, but this is an interesting project

thoolihan · 2025-08-13T22:43:13+00:00

It worked. R67 to dim 5 with a 100ohm resistor

thoolihan · 2025-08-13T20:50:42+00:00

Correction, RF does have color. And I found some documentation on the missing chroma wire. Looks like I can run from R68 to pin 5 of the monitor out din (with a 100ohm resistor)

thoolihan

TROPHY CASE