Thanks for the advice Karl. Unfortunately I didn't test until I got it home, just a quick power up without any speaker just to make sure it light up. I bought a MaxTrac a few months ago and it popped the fuse as soon as connecting power.

I had the control head completely removed from the MaxTrac ...

Hey guys,
I picked up a Motorola Spectra A7 at a hamfest and everything seemed to be working fine until I hooked up a speaker. I pulled the control head off of a MaxTrac to borrow the speaker but upon turning on the power the LCD light up with the seftest and went dark.

If I disconnect power and ...