Hello All,

Please excuse the OT post but not sure where else to go.

I have an SR-52 that I got new in '76 (as a freshman in high school) that I'm trying to resurrect.

Besides the gummy wheel problem, it has a problem with the digits. I haven't characterized it exactly, but here are some things I notice:

- when I have the degree / radian switch on radians, I can not enter any digits.

- when I have the switch on degrees, I can enter all digits and the display seems to work fine.

- I can do operations on numbers that do not contain 8's or 9's<nl>

- whenever I enter a number with an 8 or 9 and then press an operation key, the display flakes out

- also if I do some math on smaller numbers and the answer contains an 8 or 9 the display flakes out

- flaky display adds a bunch of 8's before the number and / or adds some digits after the decimal point. Sometimes there are gaps between digits.

- The flakiness seems to be not just at the display, but also in the operand registers of the processor since I can not undo the display mistake by doing the reverse math operation.

- happens both on battery power and with charger

Wondering if anyone has any experience with problems like this or any ideas.

Thanks,

Colin

Apex, NC