How Can You Repair an MKS 1179A Mass Flow Controller?

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SUMMARY

The MKS 1179A Mass Flow Controller is challenging to repair due to limited availability of replacement parts. Users report difficulty in sourcing specific components, particularly a small block with a stainless steel capillary tube and a three-wire electronic ribbon. The manufacturer appears to prioritize servicing their own products, which restricts access to necessary repair parts. This discussion highlights the need for a deeper understanding of the internal workings of the MKS 1179A for effective troubleshooting and repair.

PREREQUISITES
  • Understanding of mass flow controller components and functionality
  • Familiarity with MKS Instruments products
  • Basic electronics knowledge, particularly regarding wiring and circuit components
  • Experience with troubleshooting and repairing electronic devices
NEXT STEPS
  • Research MKS 1179A Mass Flow Controller schematics and internal components
  • Explore alternative sources for MKS replacement parts or compatible components
  • Learn about mass flow controller calibration techniques
  • Investigate forums or communities focused on MKS Instruments repair experiences
USEFUL FOR

Technicians, engineers, and hobbyists interested in repairing or understanding the MKS 1179A Mass Flow Controller, as well as those seeking insights into mass flow measurement technology.

Chris Haskin
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Would love to talk to anyonw that is familiar with MKS instruments 1179A Mass Flow controllers. I have taken apart a MKS mass flow controller and am trying to fix it but I am not sure where to get replacement parts, or even what some of the parts do.Most specifically is a small block on top of the main control block that has a very small diameter stainless stell capillary tube and an electronic ribbon with 3 wires in it. It is out of warranty so all I know is that it doesn't work and I would like it to. But this is really more of a learning experience than anything so that I can see how these controllers work. It mainly looks like the company would like to work on their own products and that there is not a lot of replacement parts available as far as I can see. Would appreciate any help from someone who has done this before.
 
I am having a hard time finding any repair parts for a MKS 1179A mass fow controller. I think that the company is trying to make money by not selling repair parts. Has anybody else had the same experience?
 

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