Fixing an old HT

A couple of months ago I was asked to fix a 20 year old HT-202 from radioshack. I had to look up the error code on the internet, and I found out that the CMOS battery had failed. The CMOS battery that maintains the memory and settings during the periods when the radio is turned off. It should be nited there is a similar battery on the motherboards of computers for the same reason. This is not an end of life for the radio problem. I opened up the radio identify the location of the battery and what was required. The CMOS battery is a CR2303, but is in the solder tab format.

This meant I was going to have to cut the leads from the old battery and then solder them on to the new battery. One of the difficulties is that the battery was stuck to the back of another board by an adhesive sticker. Once I soldered the connections back on to the new battery, I used double sided tape to mechanically attach the battery where the adhesive had been. A detailed look at the repair is shown below.

 Once the radio was reassembled it turned on set to default settings without a problem. Now the radio can last maybe another 20 years before we have to replace the battery again.