Author Topic: Data East Power Suppy board F5 fuse blows.  (Read 215 times)

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Offline judgeboz

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Data East Power Suppy board F5 fuse blows.
« on: August 25, 2010, 11:23:47 AM »
Guys, I have a problem with a Data East Power Supply board in a LW3 pin.

The F5 fuse (soleniods) blows immediately on the Power Supply board when I switch the machine on.

Ive swap the Power Supply board with another and it works so the problem is on the board and not a coil on the playfield.

Ive been told to replace C8 and Z1 but Im unsure what the specs are for these parts are - can someone please tell me what they are as I cant find them in the manual.

Cheers
John.

Offline dj10555

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Re: Data East Power Suppy board F5 fuse blows.
« Reply #1 on: August 25, 2010, 12:02:46 PM »
Hi John,

The schematic shows 100uf 100v cap for C8 and 15G470KM varistor for Z1. More than likely the varistor has gone short. If you contact Ed at http://www.greatplainselectronics.com he should have both of these.

regards Derek


Offline judgeboz

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Re: Data East Power Suppy board F5 fuse blows.
« Reply #2 on: August 26, 2010, 09:01:31 PM »
Hi John,

The schematic shows 100uf 100v cap for C8 and 15G470KM varistor for Z1. More than likely the varistor has gone short. If you contact Ed at http://www.greatplainselectronics.com he should have both of these.

regards Derek


yep it was the varistor - thanks Derek.

cheers
John.

Offline beaky

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Re: Data East Power Suppy board F5 fuse blows.
« Reply #3 on: August 26, 2010, 11:09:33 PM »
I checked over the schematic after Derek posted and I agreed with him (Varistor) not much else to go wrong. I would be changing the cap also
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Offline judgeboz

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Re: Data East Power Suppy board F5 fuse blows.
« Reply #4 on: September 03, 2010, 01:36:00 PM »
Does it matter what way the varistor is installed?

Offline beaky

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Re: Data East Power Suppy board F5 fuse blows.
« Reply #5 on: September 03, 2010, 01:38:13 PM »
no,
not at all
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