I am currently working on a future spa for a friend that is in quite poor shape. The objective is to get it playing good then decide how far cosmetically to go.
Power supply has been rebuilt with new bridges, connectors, and fuse clips. Getting good voltages on all the test points.
SDB has new capacitors and recommended upgrades per pinwiki.
MPU is a new weebly board as the old one was toast from severe alkaline damage. Previous MPU had locked on Led even after attempting to clean and replace corrosion zone parts. The new MPU looks great and has gotten me closer to getting this running, but not quite there yet.
After replacing the MPU with the weebly, I get 6 flashes on the MPU. When the 7th flash is to light I get the left kick back and saucer coils to energize. Following that the led locks on dimly. MPU has good 22vdc. Curious of the next thing to try? I have replaced every .156 and .100 connector in the back box.