Sega Power Box

[Eddie Twadds]

Can anyone spot the deliberate mistakes(s) on this baby?

Two questions?
Is it imperative to have a line filter and a varistor?
I am going to install a thermistor because it keeps tripping the garage RCD. As there are two fuses, I presume I install it on the live side before the fuse?

 

[lukewells]

Nice and dangerous there with taped live wires and no earth!

Buy it from Brighton by any chance?

 

[Eddie Twadds]

Not from Brighton - although it came from Europe at some point in its life.

 

[Nedreud]

SHUDDER

Fuses least of your worries at this stage. As @lukewells said I'd be sorting that non-existent earth connection out first. Unless you like living dangerously when you play pinball...

Get rid of the taped connections. Preferably re-strip the wires and solder them onto the switch properly, or at least use some connector blocks. But getting that earth back on properly is most important.

What game is this?

 

[Eddie Twadds]

The pic was for sh1ts and giggles because it kept tripping the mains . Much soldering and earthing will shortly be taking place My main question about the line filter still stands - is it necessary? Btw its Frankenstein and the worst pinball purchase I've made in 10 years. Don't buy pinballs unseen children!

 

[lukewells]

The pic was for sh1ts and giggles because it kept tripping the mains . Much soldering and earthing will shortly be taking place My main question about the line filter still stands - is it necessary? Btw its Frankenstein and the worst pinball purchase I've made in 10 years. Don't buy pinballs unseen children!

Is the mains filter required

Technically yes, it is a requirement, as it both stops the device in question receiving noise from other devices, but more importantly stops the device putting out noise onto the mains wiring of your house potentially.

Will it work without the filter? Yes indeed, you would probably notice no difference.

 

[Eddie Twadds]

Ok understood. The way its wired currently it has two fuses, one for live and one for neutral. Other than being overfused should I leave both in until I can install the line filter?

 

[lukewells]

There is nothing wrong with fusing both the live and neutral, it is just deemed unnecessary if the plug/house wiring is actually wired correctly. Of course earth should never be fused, as that needs to be an uninterrupted path to ground.

As the filter is not critical for operation you can leave it as is for now, just make it safe before plugging it in Your earth needs to be good, else you run the risk of the siderails / legs / coindoor all becoming live if something in the powerbox shorted to the frame

 

[Eddie Twadds]

Now sorted. New switch, fuse holder, thermistor and EMI filter all installed as they were all a pile of poo.

 

[PeteB]

Can anyone spot the deliberate mistakes(s) on this baby?

Two questions?
Is it imperative to have a line filter and a varistor?
I am going to install a thermistor because it keeps tripping the garage RCD. As there are two fuses, I presume I install it on the live side before the fuse?

Isn't that varistor on the volume control circuit?