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electrohome g07 Vertical collapse.
abispac:
Rocky mistake mr grantspain, anyway acording to this guide
http://www.pinrepair.com/g07/
--- Quote ---The new transistor will only mount one way (unless you force it!) Do a continuity check between the outside of the transistor's metal case and the metal frame it mounts to - there should be no continuity. If there is continuity, you must replace the rubber or mica transistor insulator. If you fail to do this, you will kill the new transistor (and of course the monitor will not work).
--- End quote ---
but as soon as i add this metal holder thing,
the ouside of the transistor gets grounded, ive seen pictures and thats the correct cable on that metal thing, so its this normal? its that the way its supposed to be? the outside can be grounded? i know the 2 pins are not. thanks for any help. i got a say i added extra plastic to make sure the transistor does not get continuity, but that metal thing gets the continuity going.
grantspain:
thats the regulator transistor, it has nothing to do with vertical deflection- if that was short circuit it would blow a fuse and your b+ would be unregulated
some of the online guides are good and others are not
put it back exactly how it was before
behrmr:
Many things can cause vertical collapse in a G07. Neither of those are the large bottlecap style transistors.
Has the monitor been capped recently? If not start there.
C402 is a little unmarked usually blue tantalum cap. This cap fails and causes collapse.
FR401 68 ohm fusible resistor goes open or out of spec and causes collapse.
X401/X402 the vertical output transistors can go bad
Just about anything wrong in the 400's can cause collapse
abispac:
--- Quote from: grantspain on April 03, 2020, 06:46:48 pm ---thats the regulator transistor, it has nothing to do with vertical deflection- if that was short circuit it would blow a fuse and your b+ would be unregulated
some of the online guides are good and others are not
put it back exactly how it was before
--- End quote ---
I did and now my monitor is dead.
grantspain:
ok show us a photo of how you have wired up the regulator