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hantarex polo 28 blows fuse
perjmolsen:
Well... got the new resistors today, and put them in.. still the same issue. :badmood: :banghead:
Pin 1 and 3 is disconnected at the flyback, 40W load on pin3 pad and chassis as ground.
A smalll video -
:dizzy:
grantspain:
remember to bridge the centre two pins of deflection header or have the yoke plugged in
perjmolsen:
Hi Grant :cheers:
Yes - I have Remember to plug in the yoke plugged in.. even that i wish i not had at the moment, so it had been an easy fix ;D
I have tried to measure between chassis ground at the test points...
TP6= 100.3 Ohm
TP7= 0 Ohm
TP8 0.794 Ohm
TP9= 33.23 Ohm
Can there be some sort of small short when i get a ohms reading?
Thinking that I might have to take some measurements on my other Hantarex chassis.. it should have the same ohms readings
perjmolsen:
Hi :cheers:
Some updates
Took som measurements on my other working chassis
TP6= 0.750 ohm (took awhile before it where steady- on my bad one is immediately go to 101.3 ohm)
TP7= OL
TP8= 0.928 ohm
TP9= 191.9 ohm
Noticed a burned spot on my bad chassis.. but i have measured the diode and resistors on it, they measures ok - but thinking that i might need to change the parts, because on my working one no burned spot
still a bit :dizzy:
perjmolsen:
Tested ohms across the resistors in the burned circuit at the bad chassis,and got these values (tested in circuit)
R119= 001.4 ohm
R255= 003.1 ohm
L112= 003.1 ohm (colis)
L102= 001.6 ohm (coils)
R118=0.920 ohm
Same measurements taken on my working chassis resistors in circuit
R119=000.4 ohm
R255=000.9 ohm
L112=000.6 ohm (coils)
L102=000.3 ohm (coils)
R118=0.953 ohm
So next step is to pull the resistors out in the bad chassis and test/replace them.
If I look at the colors I get this values, sometimes my eyes cant see colors, so can someone confirm the values?
R119= 100 ohms
R255= 560 ohms
L112=220 ohms (coils)
L102=150 ohms (coils)
R118= 1k omhs
If I pull the resistors out i get this reading:
R119= 97.4 ohms
R255=0.548k ohms
L112= 4.4 ohms (coils)
L102= 2.6 ohms (coils)
R118= 0.989k ohms
So my conclusion is that L112 and L102 is coils and cannot be tested this way, all the other comments are close to spec and not the cause