Main > Monitor/Video Forum
Troubleshooting degauss on Hantarex MTC9000
Nipedley:
Thank you, my coil is fine at 28 ohms however on the power plug I'm measuring 125v on both sets of pins, so the degauss circuit is only getting 125v
From what Grant said it seems this might be the problem then? As I don't really feel like fiddling about with transformers I guess the easiest solution here is to just get a degauss wand and do it manually when required?
Incidentally I also decided to measure the B+ and it's running at 133.3v, is that okay? I know it's supposed to be around 130v but not sure how exact that should be
Many thanks
princess prin prin:
--- Quote from: Nipedley on May 04, 2017, 12:04:29 pm ---Thank you, my coil is fine at 28 ohms however on the power plug I'm measuring 125v on both sets of pins, so the degauss circuit is only getting 125v
--- End quote ---
If it's a US one, it's normal.
--- Quote from: Nipedley on May 04, 2017, 12:04:29 pm ---Incidentally I also decided to measure the B+ and it's running at 133.3v, is that okay? I know it's supposed to be around 130v but not sure how exact that should be
--- End quote ---
It's ok.
ed12:
i read something here today that set my mind off how the op could of stated what they did
without centering out the op
the 120/240 vac input has 0 to do with the deguass circuit
it is only used for refernce to the input voltage to the switcher power supply
ie: min-max rating,the deguass is the ptc and its switching (manual/automatic)
it is about that simple
ed
grantspain:
I am absolutely failing to see what bit of info I gave that was wrong,mtc9000 have two sets of voltages,128vac for the chassis and 240vac for the degauss circuit-you can wire the power input in such a way that u.s voltage will work by basically linking the ac lines
please tell me what I said there is wrong
Nipedley:
I've ordered a replacement PTC but still a bit confused about that voltage. What you guys said there went over my head
Given that the degauss circuit of my MTC9000 is being fed 125v AC from the isolation transformer should that work when I fit the new PTC?
I'm unsure what region my MTC9000 is from, it doesn't match many schematics/manuals available on the internet so it's difficult to say. However my cabinet's wiring does seem to be original. For the record I'm in the UK on 240v mains