Pro-2026, won't hold memory. Is there a battery inside?

[JoshuaHufford]

I have an old Pro-2026 that doesn't hold it's memory and I'd like to put it back in service. I took the cover off today assuming there would be something like a button battery inside but I don't see anything that resembles a battery in there.

Am I missing something?

 

[lebrunmn]

If you head over to:

Download Realistic PRO-2026 Service Manual | ManualsLib

www.manualslib.com

You can get a PDF of the service manual... Interestingly enough, there is a hand-written annotation in the schematic on page 42 that mentions adding an extra capacitor "for memory loss problem."

Hope that helps.

 

[ProScan]

I have an old Pro-2026 that doesn't hold it's memory and I'd like to put it back in service. I took the cover off today assuming there would be something like a button battery inside but I don't see anything that resembles a battery in there.

Am I missing something?

See if these links are helpful.

https://www.youtube.com/watch?v=oeqHN98Pp8c

https://forums.radioreference.com/threads/pro-2026-battery-backup.115951

https://forums.radioreference.com/threads/pro-2026-lost-preset-frequencies-while-in-storage.370817

 

[JoshuaHufford]

Thanks!

 

[hill]

Going forward I think there were at least two different versions of this scanner. The first ones didn't have any memory backup. Radio Shack later sold an updated version that had some kind of backup. Radio Shack would add A to updated radios 5 or 6 digit model number to denote an update. Some radios had more than one update, they would add a B to second one, as in the PRO-94.

I had the first version of this radio without any backup.

 

[ko6jw_2]

Old threads indicate that this radio uses a large capacitor to retain memory for up to 14 days. They go bad after years of use. The capacitor looks like a button cell, but it is not. It is soldered in although it can be easily replaced (no surface mount etc). I have a Pro-2045 with th same arrangement. Replaced the cap and all is well. They can be ordered from electronics wholesalers like Mouser and Dow. Value was printed on the cap.