A4000T not giving video output from my Cybervision64 Card

[quenthal]

I'm not sure, but if CV depends on 12V-line and it is not supplied in zorro-slots your symptoms could very well be caused by that. Zorro-slot pinouts available here: http://www.l8r.net/technical/t-zorro.shtml

P.S. You could also try that other way to check things out and report here.

[Vlabguy1]

Quenthal..
Thanks for the zorroIII pinout..I can see how the two might be related..ie
the missing 12v..however where could I optain the pinout for the CV64
card??..and or the output of that card..

I might try swapping everything like you said..but that would only confirm??
That my processor card is up and working??  

The machine works just fine.in standard Amiga modes..until I try to use the CV64 card..then nothing..I really hope this is not a mother board problem
and just a power supply issue.  Im going to try a few other ZorroIII cards to
check that bus..

Thanks again for you help and suggestions..my poor amiga needs me..and
I need her up and running with retargetable graphics..

Rich

[quenthal]

Vlabguy1 wrote:
I might try swapping everything like you said..but that would only confirm??
That my processor card is up and working??  

Well, it would confirm that the issue is with the mb or PSU, since they are the only pieces of hardware you are not swapping. In this way you could be more sure that there is no problem with libraries and software - to clarify a bit my instructions:

1) Using your A4000D with Cybervision and single HD with other hw removed. Verify that your clean install works with RTG.
2) Copy from your A4000T workbench.library to your A4000D's LIBS: (wb.lib is not included in the rom in A4kT as it is in A4kD and OS expects it in LIBS).
3) Move turbo, harddrive and CV from A4000D setup to A4kT, change jumpers accordingly and turn the machine on.

[Vlabguy1]

quenthal..

Thanks for the post.. :-)
I did #1 and everything worked just fine...
and #2..checked and double checked the libs..all is good there..
#3 yes I agree I should check the processor board..but wouldnt other
facets of the computer not work if the processor card was bad?  
just curious..and I keep coming back to the fact that I have
12v loss on the serial connector..
I have to say that this 4000T has not seen much use and was always in a
temp controlled room(myoffice) and unplugged when not in use.
I think I will do all this swapping as a last resort..

Do powersupplies just go bad like that..or has something shorted out on my
motherboard..ie leaky caps..and doing damage..

your thoughts.
Rich

[quenthal]

Vlabguy1 wrote:
quenthal..

Thanks for the post.. :-)
I did #1 and everything worked just fine...
and #2..checked and double checked the libs..all is good there..
#3 yes I agree I should check the processor board..but wouldnt other
facets of the computer not work if the processor card was bad?  

No no, I think you misunderstood me if you meant you've tried what I said:
#1 You have Cybervision working in A4000D. In that machine you have only harddrive, cybervision and turbo card. Now if you want to try all these in your A4000T, you need to first prepare harddrive for usage in it. To do this, you need to do..
#2 copy workbench.library to libs from A4kT
#3 now move physically harddrive, CV and turbo from A4kD to A4kT.

Sorry if I was the one who misunderstood, english is not my native language..  :-P

This might confirm that the problem is not with the OS (it worked in the A4kD with CV), libraries (it worked with same turbo in A4kD with CV) or settings (same as in functional A4kD with CV) since you are using same harddrive, nor with the turbo itself.

You can see visually if capacitators are going to die - check amiga.serveftp.net. But I don't think they are to blame. It is not uncommon for PSU to die like that.

[Vlabguy1]

quenthal,

Thanks again for your post and clarification..I understand now..and dont
worry about the english language..I mess it up all the time.. :-)

I will try all what you said when I have time..that is a big job!! I will have
to wait til the weekend to do that..but I can check the power supply and
other graphics/ZorroIII cards as well as check the motherboard for any leaky
Caps..  I hope its just the power supply..
So maybe the 12v from the serial port and ZorroIII bus are the same?? or shared?
I think that is a good question.

Must be nice in Finland??
I was born in Germany and I love it there
Rich

[mdivancic]

So maybe the 12v from the serial port and ZorroIII bus are the same?? or shared?
I think that is a good question.

More than likely. You should really take the time to check the power supply directly. The A4000T uses an AT Power supply. Here's the pin out. Good luck.

Mike

http://pinouts.ru/Power/MotherboardPower_pinout.shtml

[Vlabguy1]

Thanks for the post..
So are these AT power supplies a direct plug in..with the A4000T motherboard?
Let me get this straight.. the 4000T uses an AT PS..not a ATX PS..is this
correct?

[mdivancic]

Thanks for the post..
So are these AT power supplies a direct plug in..with the A4000T motherboard?
Let me get this straight.. the 4000T uses an AT PS..not a ATX PS..is this
correct?

Yes, as others have stated, this is correct. Now test that power supply so we can eliminate that as the problem point (or not)!

Mike

[Vlabguy1]

@mdivancic,

Thanks for the reply..I hope to get a chance this weekend to finally fix or know
what the problem is and will post the results..Thanks again for everyones
input and advice!!  :-)

Have fun and take care
RichfromNY

[yogisumo]

@Vlab

...?

[Vlabguy1]

MMMM...sorry folks..have not had a chance to solve me Amiga problem.  I will though have no fear.  Just been busy with a move and tryin to arrange my new place..I live in an old castle now..built in 1870.. :-)
And just accuired another 4000T with Toaster/Flyer and a few other cards in there..plus a Driv-In tower(with no HDs :-(  .....)..but hey the price was right
FREE!!