Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: Justez on May 01, 2020, 07:49:10 am
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I have a hantarex polo 25.
Problem - No picture or neck glow. (No ticking sound)
I'm running through RF's flowchart to troubleshoot this thing and the B+ is still reading high even though I followed it all the way to the end.
Use a 40w bulb as a charge to verify that the power supply is correct.
I obtained:
B+ 145v
TP9 17v
TP8 26v
TP10 12v
I tried the flyback on another chassis and it's ok
I mount the flyback again and got:
B+ 155v
TP9 17v
TP8 26v
TP10 12v
IC104 pin 1 : 11,85v
Bu508(T114) tested and ok, collector voltage same as B+ 155v
I test T113, seems ok.
TP23 oscillospcope
(https://i.ibb.co/grBN7dC/tp23.jpg)
TP27 oscillospcope
(https://i.ibb.co/yNN9PPS/tp27.jpg)
I was wondering if anyone has ever seen anything like this before and might have some tips.
SOLVED: TH2 was dead