9815A - New in Open Box - What to do to NOT damage it.

[teenix]

Seeing that something did work and then didn't suggests that something has broken down inside, probably from age. If the unit has been kept in a dry environment away from a salty beach side atmosphere, the insides should be ok. Some components like electrolytic capacitors might need attention but you would need proper test gear to test them and other components out.

The mechanicals may also need attention with dust collection and the lubricants may have degraded over time and either cannot or should not be used.

The wiring might need attention especially at solder points on circuit boards. These may have corrosion. If everything looks nice and clean inside, this may not be a problem. Avoid moving the wiring too much or you may introduce problems.

Getting hold of a service manual would be a good start if you wanted to check it out.

cheers

Tony