Mtc Hantrex 9000 monitor keeps blowing fuse

dyno

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Hanatrex MTC9000 monitor keeps blowing fuse

I have an Operation thunderbolt which has a 25" tube with a hanatrex mtc 9000 chassis. The problem is when you turn the game on the 2 amp fuse on the chassis keeps blowing but the 3 amp fuse on the chasis is fine. I took the monitor out of the game and hooked it up to another isolation transformer I have set up and still the 2 amp fuse blows so I know it is a problem with the chassis. Help please
 
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Start by finding and testing your HOT. Also, visually inspect the entire chassis (including the flyback) for any caps that have bulging tops, parts with cracks in them, or obviously burnt parts...
 
Does anyone know where I can get a list that has the value of the caps for this chassis, I just want to make sure that whoever re-capped the chassis put the right ones in.
 
according to the flow chart for it, shorted HOT, shorted diodes D19-D22, Bad HV unit, examine for cracks (common failure in this monitor) or shorted C36 and replace C34.
 
I have checked the HOT it is fine, I have replaced the doides and the fuse is still blowing. The flyback seems to be in good condition, doesn't have any melting and there are no cracks in it and it looks like the chassis has been re-capped already. I am not sure what to try next.
 
Check your regulator. Check all your diodes and transistors. Check for any caps with bulging tops...
 
Finally got the parts I ordered and out in the new HOT and voltage regulator transistor and the fuse does not blow.:) But now the big 330 ohm ceramic resistor gets very hot and starts to glow orange, so does that mean my flyback is shot? If it is where is a good place to get one and does the 330 ohm resistor have to be replaced or can I keep using it? If it does have to be replaced where can I find one?
 
Did you put any insulators in between the HOT or Regulator if they were needed?

Sounds like you have a diode or resistor shorted somewhere...
 
Well all my parts arrived and still no luck getting the monitor running. I put a new flyback in today and the fan on the chassis moved for a second and then stopped and the big white resistor is still going red hot. I measured the B+ and on the left side of the resisotr(SP4) it reads only 20 v dc when it suppose to be +130v and the right side(SP3) reads about 159v dc. I have changed the HOT and the voltage regulator and basically did everything the flowchart said with no luck. Any idea why the fan on the monitor would power up for only a second and then stop and why I am only getting 20 v dc when it should be +130v dc. The only thing I still have to do is put in a new cap kit which I am going to do in the next few days.
 
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