Weir SMM 200 NT-M23 power supply

[Marek1953]

I have problem with pover supply/voltage converter for Charmilles
Roboform 20 CNC. It is made in UK by Weir type SMM 200 NT-M23.
I can not find this company, maybe is out of business.
Can not fix the problem without schema.
Is there anybody who can help me to locate the schema for
this device. I have located the problem, but I can not figure out
the working of tis part of circuit.
Would be very thankfull for any help
Service is for me too expensive now
Marek

[enzoc]

hi. Try to replace 2 small capacitors (10mF with 22mF 63V) near TR1.
Enzo

[Surjit]

Originally Posted by Marek1953 I have problem with pover supply/voltage converter for Charmilles Roboform 20 CNC. It is made in UK by Weir type SMM 200 NT-M23. I can not find this company, maybe is out of business. Can not fix the problem without schema. Is there anybody who can help me to locate the schema for this device. I have located the problem, but I can not figure out the working of tis part of circuit. Would be very thankfull for any help Service is for me too expensive now Marek

Did you fix the power suppley ? I have same problem on my Roboform 20, I would like to know how ou fix it ? Thanks

Surjit

[Marek1953]

No, I did not fix my power supply. Too many components were proprietary
without any markings and I could not find the schematic anywhere.
In the end I had to call Charmilles service and pay what they ask mi to.
In thi way I fixed my problem.

Marek

[Engineerman2]

The company I work for in the UK gave up trying to fix one of these and we used a company called A1 Power Engineering (UK) based in Peterborough in the UK. Can't remember there details but you can probably google them. Used them a couple of times now without problems.