Recent content by Ohmerone

  1. Ohmerone

    Nanao MS 3620 S Monitors for Virtua Racing Deluxe

    If it’s not just bad connection on part, Check with arcadecup see if he can fix it. It's best to get a warranty with this chassis A lot of voltages are posted on the board connectors that would confirm power to circuits what have you checked? Any chassis sounds ticking or blown fuses Large...
  2. Ohmerone

    Chassis model?

    A lot goes bad on the chassis even bad connections it’s best to have the chassis out so all parts can be seen by accomplished help We or I know where to look And Can see the parts on the board But first you need to remove the power plug to the board and confirm the female pins are tight The...
  3. Ohmerone

    WG K7203 high B+ Removing HV shutdown protection does not bring back pic.

    Need to keep the bulb for load on ps Until the chassis is working Normal shutdown is around 140 tp1 not 160 v Your missing h-drive confirm test q502 collector it Should be around 24. Just need to confirm the drive and voltage Though the H-transformer t501 bad solder connection ? Don’t need...
  4. Ohmerone

    D9400 Repair......I think I can claim victory...

    Great you got lucky! Need to replace the caps Unless you want it back to repair later! They are essential. To replace at least once since it came out And need to clean off glue around the PWM ic Btw Q901 is the Hot for high voltage only Not q207 and q206 it’s for deflection only That’s the...
  5. Ohmerone

    XM501 Vert collapse

    Also Check R81 if open or Just jump it. Or just twist the legs together. If I was going to need to add caps to board Most can be replace without moving the board But if I did it can be pushed up from the bottom After desolder the grounds from bd to chassis ground and remove zip ties on...
  6. Ohmerone

    WG K7203 high B+ Removing HV shutdown protection does not bring back pic.

    need the electrical load / bulb 40-60w on tp1 All the time to control the b+ during TS The ic is monitoring the vcc Voltage current control by a Zener in the ic. It will kill the oscillator and no HDrive Open Horizontal transformer The FB is common failure on this chassis Sometimes not so...
  7. Ohmerone

    Sanwa PM1730B / PM1736

    Need over the chassis So all parts can be seen and in focus. With the symptom ? Unless you know all the caps are bad It’s got a few caps. I would pull them 30 minutes later I would make a kit based on the list if needed I would be looking for you the problem If I see it in the photo Don’t...
  8. Ohmerone

    G07-CBO with no high voltage, B1 at 120V and not in shutdown

    That's was easy Between controlling the b+ Open the hv load to check things And confirming you have H-drive After 15 minutes right? Maybe next time you get another repair. At the ic before buying every part. And the h-drive trans collector has About 140 volts p~p and a good voltage Drop across...
  9. Ohmerone

    hopper motor problem in IGT "Road Rally" slot machine

    Hopper Motor from a Rowe bill changer Or steel breaks off it. It a 24vac ..motor if good then need to add the gear box to it good luck
  10. Ohmerone

    K7000 Test Points

    I know what you’re saying. Your looking for technical flow From experts right. not a schematic If not fixed yet. You Need the Voltage drop across the big ass resistor The 15watt one side is voltage from the filter cap the other is the b+ Need the b+ to determine What to do next. Only two...
  11. Ohmerone

    G07-CBO with no high voltage, B1 at 120V and not in shutdown

    Pin 11 is dc for horiz-drive Pin 6 is voltage for vertical Drive Vert does not stop horizontal-drive Again if u measure a good voltage drop across R511 then you have drive to the h-drive transistor If not confirm you have 12v on pin 11 Again you can lift one end of z701 while ts To force...
  12. Ohmerone

    G07-CBO with no high voltage, B1 at 120V and not in shutdown

    You still Playing with this? If just the HOT Collect is off. To check if H-drive from the IC which is working. but to check if H-drive Check the voltage drop across R511 going into the H-Drive transformer. On any (working chassis) there's should be about a 30 to 40v voltage drop across the 15...
  13. Ohmerone

    testing G07 HOT in circuit

    Yes, you can use the 40 wall/60 watt bulb, Yes, just the incandescent bulb On a cheap candle light holder type and Two alligator clips medium size No led bulbs for correct electrical load on power supply
  14. Ohmerone

    testing G07 HOT in circuit

    Great. If the HOT has been replaced already but has a Mica out of place that's a problem. Or cracks in the insulator. I keep track of any low ohms on the B+ trace until i can have any dc on the Collector. should always be high ohms to ground. With no hot as a load. the B+ should be high...
  15. Ohmerone

    K7400 - No B+

    Its possible to put a replacement ic in wrong Looks like it was touched. confirm its in correctly. Then get manual or datasheet and find pinout, measure the Dc at the Vcc pin. confirm its there. After a few minutes touch heatsink see if it gets warm at all? Ic would suspect IC or Voltage to...
Back
Top Bottom