Hantarex MTC9000, shorted tube (no it wasnt) ??
Posted: May 11th, 2021, 3:16 pm
Hi, im working on a dead Hantarex MTC9000 monitor.
When starting it up I have ~130VDC on the yoke connector (black wire), I can hear high voltage static but then quickly I can hear the tube discharging.
Replaced the chassis with a known working chassis but got the same result.
The yoke seems to be fine, 2.5 Ohms and 14 Ohms.
I the put the previous known working chassis together with another tube, but then I got the same symptom, HV static, discharge but still 130VDC at the yoke connector
Is there a short in the first tube that killed my second chassis?
The first chassis has an original Eldor flyback, which are prone to die.
Calling mr @grantspain and @PrincessPrinPrin
When starting it up I have ~130VDC on the yoke connector (black wire), I can hear high voltage static but then quickly I can hear the tube discharging.
Replaced the chassis with a known working chassis but got the same result.
The yoke seems to be fine, 2.5 Ohms and 14 Ohms.
I the put the previous known working chassis together with another tube, but then I got the same symptom, HV static, discharge but still 130VDC at the yoke connector
Is there a short in the first tube that killed my second chassis?
The first chassis has an original Eldor flyback, which are prone to die.
Calling mr @grantspain and @PrincessPrinPrin