I just got an older Seal Jumbo 150 dry mount press in 16" x 20" size. When plugged in and turned on, the red light blinks, temperature seems to come up, but I don't get a green light and the temp setting rheostat doesn't seem to function to affect the heat cycle. It seems to be in good shape, clean, good platen and pad. There are no obvious signs of neglect or abuse and it is definately sturdy.

Does anyone have some experience with this press? I would like to correspond with someone who has used this type of press and could answer a few questions for me. If there is a problem, I can probably trouble shoot and fix the thing, but I would like to know what "normal function" is and how it should behave before I start to tinker with it.

If the heating elements are working, the problem is most probably a poor, bad, corroded, or otherwise open connector. It could be in the indicator circuit, like a burned out pilot lamp - naw it couldn't be that simple.... I think some of these units can be wired for 220 or 110 volts. One wired for 220 but connected to 110 circuit might give the operation you are perceiving. How hot dos it get?

I think it could be repaired at home if you have a volt-ohm meter (Ohm?) and some patience. I wish I could be there....

Truly, dr bob.

Thanks Dr. Bob,

I don't have a temperature probe with the correct heat range, so I don't know how hot it gets. I just plugged it in last night for the first time. Since it is heating, I will chech continuity through the trim pot and see if it is working. I have a volt/ohm meter, so I can trouble shoot, but I don't want to take too many steps without need. I'll open it up and have a look at the top end. Hopefully it is a loose or corroded connection. Will post what I find.

Again, thank you.

Dr. Bob,

I found the green lamp was loose, tightened same. Then tightened all connections I could find and some were also a bit loose. Plugged it back in, turned it on to "high" heat and waited a bit. Hot stuff! I did a test print with RC paper and it works like a charm. I do need to adjust the temperature setting knob (plastic melted from the face of the print) but with the green light functioning now, at least I can see how it works when cycling.

Many thanks for your input. tim