We were recently sent a TRS-80 for restoration. Here is a list of work done:
- Replace all capacitors
- Replace the old battery
- Clean up damage from two capacitors
- Fix any broken solder joints
- Ultrasonic the board
Cracks from damaged capacitor 
Oh boy… 
Just in case anything got weakened. 
Another nasty surprise to clean up. 
All restored and tested
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