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Main => Monitor/Video Forum => Topic started by: Easybeatuk on September 26, 2025, 07:23:52 am

Title: Deguassing a Hantarex MTC-900E CRT Monitor
Post by: Easybeatuk on September 26, 2025, 07:23:52 am

I recently got a Hantarex MTC-900E as part of a Jamma machine I purchased and it looks like it is in need of degaussing, there is a degaussing coil fitted and connected to the PCB however I am trying to figure out how to activate it. On reading the manual it appears it should degauss when powering on however there are a couple of issues I noticed: -
The cap is missing on the top of what I think is the PTC
The wire shorting connection CC on the schematic is missing.

The question is, do I simply short out the 2 pin connector to activate the degaussing? It says on the schematic it can be push button activated so am I okay to assume I can add a suitable putton at some point to trigger degaussing when required?

(https://i.postimg.cc/9DPfVNy4/p1.jpg) (https://postimg.cc/9DPfVNy4)

(https://i.postimg.cc/BjDLzKFw/p2.jpg) (https://postimg.cc/BjDLzKFw)

(https://i.postimg.cc/HJgc1k4W/p3.jpg) (https://postimg.cc/HJgc1k4W)

Title: Re: Deguassing a Hantarex MTC-900E CRT Monitor
Post by: Zebidee on September 26, 2025, 01:17:52 pm

Maybe try replacing the PTC thermister? Generic component should suffice.