(another) Space Invaders

Arcade Collecting > Restorations & repair

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Spyridon:

--- Quote from: Spyridon on January 06, 2011, 10:25:25 am ---
My guess is a horizontal width coil? Can anyone tell me what monitor is in this cab. I couldn't see any markings on it.

--- End quote ---

Doing some research on this, it looks like I have the Motorola M5000. The broken part is indeed the horizontal width coil. Anyone know where to get a replacement?

EDIT:
Also confirmed monitor from Bob's site

Spyridon:

--- Quote from: Spyridon on January 06, 2011, 10:25:25 am --- Does anyone know if BobRoberts sells a complete rebuild kit for this power supply? I don't see one listed.

--- End quote ---

Bob got back to me and he doesn't have a complete rebuild kit, but he does have a cap kit ($15)

RetroACTIVE:

--- Quote from: Spyridon on January 06, 2011, 11:28:27 am ---
--- Quote from: Spyridon on January 06, 2011, 10:25:25 am ---
My guess is a horizontal width coil? Can anyone tell me what monitor is in this cab. I couldn't see any markings on it.

--- End quote ---

Doing some research on this, it looks like I have the Motorola M5000. The broken part is indeed the horizontal width coil. Anyone know where to get a replacement?

EDIT:
Also confirmed monitor from Bob's site

--- End quote ---

Hey Spy... I'll have to check... I'm replacing my monitor with another ... the one I have works perfectly ... not sure if its WG or Motorolla... if its a moto I'll hook you up with a chassis.

Spyridon:

--- Quote from: RetroACTIVE on January 06, 2011, 01:23:07 pm ---
if its a moto I'll hook you up with a chassis.

--- End quote ---

Excellent.

Spyridon:
Did a rebuild on the Power Supply

Here is what I started with:

Removed all the caps:

New caps installed:

I also marked all the test points on the board so I wouldn't have to keep looking it up.

When I tested out the pots prior to the rebuild, the -5v and +12v ones seemed fine, but the +5v was giving me some bad readings. And since I couldn't adjust the +5v before the rebuild, I replaced it. I decided to replace all three at the same time.

Plugged the board back in and started to adjust the voltages (without the main board plugged in). The +12v and -5v pots worked fine and I dialed in the correct voltages. The +5v pot, however, had no effect on the voltage. The +5v was reading +6.21 volts which is exactly what it was reading before. Turning the pot had no change on the voltage! :angry:

Any suggestions on what to do with the +5v?

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