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Thanks, I bookmarked your link. This radio is the older 2990, not the dx. I'll see if I can find pics to compare and see if the faceplate layout is the same.

Thanks for the tips, I'll go ahead and add the fuse. I may have a switcher from a computer, need to see if it's voltage is adjustable.

I have the 2990 playing and looking good. Been listening to 38lsb in the workshop today, worked a couple of locals and 004 in Barbados. Don't know what the story on this beast was, but it amazes me to see a radio like this with parts missing, stuff clipped all over the place, things broken...

I'm tinkering with the display in a 2990. I've searched high and low for info on JP1 on the CPU board. JP2 resets the processor, but I can't find any info on JP1. Anyone know what that is? Dave

I tried driving a voltage in to the pin on the lcd display, but no bar graph. Trying to see if something on the display needs to be enabled... Dave

Thanks!

I got hold of another 2990, and boy...there's been some fingers in this radio! I've been trying to find a service manual to properly do a full alignment, an am wondering what mobile would have the same chassis? Thanks, Dave

Nice work on the shack!!

Thanks, I've been typing on there for many years. I use it to keep track of a bunch of things I may forget otherwise :-)

Yep, that would be me :-)

Thanks for all the info! I'm working to replace the DC supply with a nice switcher I have now, working to correct the power supply sagging issue. I'll be running it behind a little Kris box I've converted to 6P45's, so probably not that important to squeeze every drop out of the PA.

I did all the clarifier stuff and pretty happy with that. Was just concerned with switching the collector supply to 12v, and wondered what the experience was with longevity. I have the bias at 30 & 60, set the key at about 2.5w and it's working pretty well. Saw some info online somewhere where...

I'm finishing a bunch of stuff to Cobra 2000 GTL. Sweet radio, this one had a ton of issues, but they all seem to be good now (except the freq counter, that's a work in progress). I'm running the OE 2sc1969 final, have done the NPC mod, and full alignment from the syn out. Do any of you run...

Thanks for the link and all the great tips, this is the first of these I've ever tackled. I'll report back with what I find, in case it helps anyone else. This rig is loaded with problems, lots of hackery :-) Looks great outside, but that's about where it stops.

I know this is an old thread, but just in case...I have one I picked up that's doing the same thing. I'm in the process of resurrecting the rest of the rig (lots of other problems), but noticed my counter doing the same thing. Have any of you had a similar problem and located the problem (short...

Trying to remember that one... was it in a light grey colored, perforated cabinet, fairly light in weight with no power transformer (used series filaments and voltage mult off the ac line?)? OK, I dug through my old stuff, and have nothing. I was working in a CB shop in NC some in the early...

Sorry for adding to the noise, I should have searched the forum first!

Totally forgot that one, classic movie!

I noticed cbtricks.com is offline. Has it been down a while, and does anyone know if it's coming back? Such a great source of info, would be a shame to loose it.

Man, I'm loving this place!