PRo 67 Memory loss

[NC4RR]

I have a pro 67 that losses its memory, normaly using a dc adapter. Not sure if cold joint,or loose connection. Been using it for years like this, just last 2 years it would do it occasionaly.Not sure adapter or what. I've seen this on yaesu vhf radios abt 15 years ago doing the same thing.I believe I built a condtioner delay box where when the ignition was turned on it killed the power to the radio util the voltage came back up. I have tried my other pro 26 same adapter seems ok.. Any help.
Railroad

 

[DaveIN]

Just curious. Does this happen with batteries installed also?

 

[NC4RR]

pro 67 memory loss

I added a few feqs sat and running on batteries only for now to see. I have a home brew 9volt adapter I built, alot of filtering and solid voltage , I will use it for now on my other scanners. The one I have been using is a RS model have had for years. I will follow up in about 2 weeks. Thanks. Railroad

 

[NC4RR]

Pro 67 Memory

still doing fine on batteries everyday.

 

[N8IAA]

So this tells us that it is either a wallwart gone bad, or the jack in the radio might be bad.
Larry

 

[NC4RR]

Not sure still fine on the batteries. Will try another car adapter this week. This is how I was using it. Mobile. I done a quick look at the circuit boards. Looking for my service manual to trace it from the dc jack. Will report when I find something.
Railroad

 

[NC4RR]

I got a new Powerline dc adapter varible, they sell them at walmart and batteries plus. After 2 weeks so far no problem with memory loss..

 

[NC4RR]

Never had the memories to fail using batteries only. I did take apart the old radio shack adapter, but unable to xreference any parts. I liked that one that reeled the cord up inside when not in use also spare holder for the tips. along with a tiltable neck.I was unable to find a schematic for it. Oh well its the way of radio shack. they not what they use to be.

 

[NC4RR]

Pro 67 memory loss

It started up again this week, seems to on batteries now. For now I'm using the pro 94. I dont think I can accidently hit the right keys every time to reset/ clear the memory. I will try later to take it apart more in dept. About 2 weeks ago I took it apart checked the memory capicitor and it seened ok.I guess I use it for parts.