National Optronics Horizon III Lens Edging Machine

[woodyfl]

This is from a light industrial machine used in the manufacturing of eyeglass lenses. The manufacturer no longer supports this machine but it lasts a long time and is well designed. It is operated by a "black box" that costs $3K to $5K to replace which contains all the boards which they only used to sell as a package and would not replace individual boards. So I opened the back box and found some totally obliterated components.



A closer view of the problem I found. Does the CR9 Component also look suspect?


Here is a good board from another machine.


Could replacing the resistors fix the board? Or is there something that caused them to burn them so badly it will just do it again to the new ones? The fuse was good on the board that I found.

Thanks in advance I am just dabbling in this and I am not a technician

[kc8adu]

Re: National Optronics Horizon III Lens Edging Machine

those are inductors.check the diodes to the right first.

[japlytic]

Re: National Optronics Horizon III Lens Edging Machine

It's a bit silly for the manufacturer to require replacement of all of the boards.