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hantarex polo 28 blows fuse
perjmolsen:
I THINK that i have found the issue ZD101 an 18V Zener diode is dead... :applaud:
So one more time... change the dead T101 and fuse...
Cross fingers...
perjmolsen:
Well... now the R103 the NTC10 went up in smoke.. and the fuse blow again..! :cry:
If i Read the resistance on NTC10 it reads 9.75Ohms so i think it still are good.
The T101 is dead again...
perjmolsen:
Positive progress now!!! :applaud:
The manual says that T101 is an IRFBC30 - and i got IRFBE30 (with an E instead of C)
The T101 that orginal where in my monitor where an STP4NA60 (N - CHANNEL MOS 600V - 4.3A)
I had an 2SK3567 (N Channel MOS 600V - 3.5A)
And i put that in, now the fuse does NOT blow and i get a B+ at TP6 only at 88V now... and no neck glow, so now i just have to get the vold up to 146V and neck glow..
Progress in the right direction :applaud:
perjmolsen:
Thinking.. that the replacement 2SK3567 is not "fast" enough so it causes my volts to be "strange" so i think i have to order some STP4NA60 as original mounted
TP6 = 88V must be 145V
TP7 = 18V must be 85V
TP8= 51V, to high must be 27V
TP9 = 49V, to high must ve 15V
grantspain:
desolder pin 3 of flyback and add a 40w 240v lamp to any ground and the solder pad of pin 3- there are solder points on pin 3 track you can go to rather than going directly to the pin track itself
this will prove whether the issue is purely power supply related