Posted By
JledStev61
on 2020-09-09
02:32:39
|  Re: Questions about Plus4 Saver
I have several 5v adaptors now.
And one of the Sony 5v adapters I've seen in some videos.
It is rated at 5.2vdc 2amps.
Plus another 2 amp 5.1vdc
And my original 5v 3amp power supply.
I bought wire up connectors for my adapters.
Just screw in the wires.
I thought to solder 4 wires from the underside of the motherboard under the power jack.
(Getting the shield off is a M****F*****)
I tested 4 pins. The 2 ac 9v pins,
and the dc 5v pins.
I plugged in the brick of death but made sure the power switch was off.
The dc came in at 5.2v (from the brick of death).
The AC came in at 10.4v.
But the power jack/port has 6 pins, I believe.
Two of which, at the edge seems to be soldered to the ground rail.
And I if there is something I'm missing there, I will put it off.
The rest of my components won't arrive for another week before I can build a Saver.
If I wanted to I could cut the +4 PSU near the connection and wire the remaining
up to my adaptor connector jacks.
It is reversible and could hide the split with some heat shrink.
Another thing to note is that Ray Carlsen built his saver on a plus4 that had the c64 jack conversion.
Which is just slightly smaller the the plus4 jack.
And he suggest cutting the positive 5V rail so it can be hijacked by an internal saver.
However because of his C64 Powerjack conversion, he had a bit more room to make the split.
The space there is very tiny with a Plus4 jack still installed.
Because of that I was thinking if I cut the brick's cord,
I could just build the saver into it.
And in the meantime use my other adapters with the remaining cord.
kopsec's advice would be a good consideration.
Not only would I have more access to the rail,
But I could build a saver with a C64 jack,
and use my de-soldered plus4 jack as the input for the saver.
In that case I would never have to cut any cord.
It would be:
(Plus4 with C64 power jack) to (C64 male din) leading to (saver) receiving power from (plus4 powerjack) to (plus4 power brick)
Downside is waiting for the mail to deliver both male and female C64 power connector and Din.
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