Hantarex MTC 9000
Blank Screen
Wells Gardner
19K4604 Vertical
Phillip Del Grosso
Alpha Amusements, Inc.
Warren, Michigan
Erwin H. Boot
Automatic Music Company
Hobart, Tasmania
SYMPTOM
Blank screen - no high voltage. This applies
to all Hantarex monitors Model MTC 9000.
SYMPTOM
Partial vertical collapse or small frame.
All transistors in B+ regulation section
check good, as well as TRIS horizontal out-
put. Rl05 turns into a toaster element, and
the chassis becomes a sandy beach.
CURE
Watch out for this one gang! This is my third
Hantarex Model MTC 9000 that has done
this. The problem is the EIIT (flyback) trans-
former. TH2 Hantarex PN 28026030. This
baby is gone south. If you look close, you
might notice a nice little hole punched
through the case along with a bit of melted
plastic near the ferrite core. Better order an
extra one for stock.
SOLUTION
Check resistor R3 l 7 on the top right hand
side of the "\TERI"' board; it should be 2.2
ohms and is probably open circuit.
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MURPHY'S
LAw # 1203
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