Amiga 4000 power supply question

[redrumloa]

Referencing THIS pinout, I have the following question.

Power Good is a TTL output from the power supply, a logical high indicating a stable power supply.

So basically I am guessing there needs to be +5V (??)present on this pin for the motherboard to determine there is a good power supply?

[redrumloa]

Aw come on, simple question! The answer I'm pretty sure i know I just want to confirm!

Also the A4000 doesn't have a tick signal pin like the A3000 correct? What I see is what I get?

[Karlos]

Regarding the PwrGd pin, it looks that way to me. It doesn't say its active low so I'd assume it's +5v normally.

As for the tick signal, no idea...

[JimS]

I think you're right on the "power good" in the 4000 that goes to a signal called _FAIL  which is pulled up to 5v.  So if it is held low, that means the power is bad.

From the schematics, it looks like the 4000 does have a 'tick' signal, but it's generated internally from VSYNC.

[redrumloa]

@JimS and Karlos

Fantastic!! This is the info i was looking for! In my wheeling and dealing I have gotten an A4000.

Now the hard decision if to keep it or resell it. :-x I have never owned an A4000, but would i really use it? I mean I have a peggy...

[Karlos]

"You must send it to me"
"You must send it to me"
"You must send it to me"
"You must send it to me"
"You must send it to me"
"You must send it to me"
"You must send it to me"

When I close this tag, you will package said A4K and ship it to my home address that I just dropped into your private messages ;-)

[Skyraker]

@Red

Now the hard decision if to keep it or resell it.  I have never owned an A4000, but would i really use it? I mean I have a peggy...

Sure , the A4000 would make an excellent upgrade from a Peg.

[Dr_Righteous]

KEEP IT!

There's just no substitute for the real deal. C'mon, with all the other machines you have, you might as well have one of each!  :-D