PRO-2006 9 volt battery solution ?

[anderd]

Thank you sir! Looks like I get to melt some solder this weekend Wish me luck!

No problem, good luck! Hope it solves your problem, it cured mine and allowed me to actually LISTEN to the scanner again lol. That beeping can eventually drive a person insane given time lol.

 

[sdwest]

After my earlier post as the beep problem devolved into a constant beep whenever the radio was on, I started working on solutions. First, I tried to eliminate the obvious.

--Was the battery producing 9vdc or more?
--Were the battery connector/wire intact?
--Had any of the connecting polarity diodes failed?

I used a digital volt meter to trace the 9vdc path nearly all the way to IC-5. In my case, no problem was found.

Next, I tried the Draconian: I reset the CPU. This wasn't really a big deal since it was time for major reprogramming. However, it did NOT solve the battery beep problem.

I then rechecked this site and found the suggestion to ground out PIN 11 on connector CN3.

This seems to have solved the problem. I now have no LOW BATTERY blink display and no beep. I still have keypad beep.

What I did was to sever the PINK wire coming off PIN 11. I then soldered a jumper wire to GROUND using the nearest metal case as a ground point. The two severed ends were stripped about 1/8th of an inch and both soldered to the ground jumper. This was all.

Please note that BOTH ends of the severed pink wire need to be grounded.

I have three images showing the process that I will make available if anyone is interested. (These photos also show a previous discriminator tap that I put in for data reception.)

ronaldangle,

I want to thank you for the tip about stopping the beep/audio skip associated with a bad chip (NEC c324C, still available by the hundreds on ebay) on the Pro 2006, I did your mod and it cured my problem immediately. I first looked at replacing the chip, and I want to tell all of you that the task is not for the inexperienced nor the faint of heart! There are a lot of tiny surface mount components at the pins of this chip so unsoldering or installing a socket could completely ruin your radio. I decided to leave that method to those much more advanced in SMD than I am. I did the "pin 11 mod" a little different with the same result. I removed the circuit board (not too difficult really), then found the socket for the 15 pin plug. At pin 11, I scratched a little of the ground plane away, added a tiny bit of solder to tin the copper, then caused a "bridge" to pin 11 from the ground plane. This works perfectly as well, and the keyboard can be removed in the normal manner without requiring the additional wire to be removed.as well.
Again, thanks for the tip, my radio is as good as new again. I don't feel a need to know when the battery is low, I don't have a need to store a lot of scanner frequencies.

Regards,
Wade, W9EZY