Hi guys,

I've got a Hot Wheels sitting here I've fired up to restore. It powers up but doesn't start, the GI lights up and there's a small flicker on the Player 1 score but that's it.

Earlier today I replaced all the fuses and resoldered connectors on the power board. The fuse in the cabinet next to the knocker seemed to blow immediately. Checking the boards, they seem okay without any major corrosion.

Since I've not worked on any Zacs before I'm really at a loss what to do, any help our guidance would be much appreciated!

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I checked the output transformer voltages at CN1 and they seem relatively stable, albeit slightly up on the nominal voltages.

[Wire] - [Nominal Voltage] : [DMM Measured Voltage]
Red - 165V : 193.5V
Blue - 43V : 49.8V
White/Green - 7.5V : 9.2V
Yellow - 10.5V : 12.3V
Brown - 10.5V : 12.3V
Black - 15V : 17.7V
White- 7.5V : 9.2V

Next on the list to check, was to reconnect CN1 and disconnect all the output CN on the power board and check the test points on the board.

[TP] - [Nominal Voltage] : [DMM Measured Voltage]
TP1 - 170V : 266.9V *** ISSUE OVER VOLTAGE ***
TP2 - 5.3V : 6.8V
TP3 - 12V : 11.9V
TP4 - 5.4V : 0.6V *** ISSUE UNDER VOLTAGE ***
TP5 - -5V : -5V
TP6 - 39V : 43.4V

Albeit my lack of knowledge about Zaccarias, I'd suggest there is an issue somewhere on the powerboard given the results of TP1 and TP4.

Any suggestions from people where to head next, in terms of which components to replace or further test?