DMX console - Zero 88 Fat frog

[totoxraymond]

Hi everyone,

I have this guy for repair, didn't boot.

After opening, the memory battery was blown, failed short. The console boots when replacing the battery with a lab power supply, so that's cool

I also have to replace a failed LCD.

BUT, these two guys also look dead to me. I don't know what these components are.
silkscreen says "var1" and "var2". They are connected to the LAMP connector.

anyone knows what can they be?


Thanks!

Thomas

 

[cyrano]

Input protection on de DMX input or PSU?

Looks like a 30V varistor to me. The controller works without these, of course, but if they failed violently, it could mean the DMX input is dead. One more thing to test...

 

[totoxraymond]

They're not on the DMX input or output, they look like they're wired in series with the LAMP connector (to put a small gooseneck light).

I don't know if they failed violently or if they're just old. we were given this console recently and it's pretty rusty.

 

[cyrano]

Soft start for a lightbulb? How elegant...