A4000T not giving video output from my Cybervision64 Card

[quenthal]

Hmm.. you should check the PSU directly. If I remember correctly, A4000T uses normal AT-PSU (pinout available for example here: http://pinouts.ru/Power/MotherboardPower_pinout.shtml)

If you have the time, you could also use that A4000D hw with your A4000T: boot up your A4kD with CV and clean working install you did before. Copy workbench.library from your A4000T LIBS: to LIBS:. Remove from your A4kD CV, HD and processor-card and put them in your A4000T. Remember to set jumpers (INT/EXT) to same positions you were using in A4kD. Turn the machine on and check if things work now.

If it turns out to be hw-problem, which I really doubt (except for that PSU), there is still no need to totally lose the hope. You can contact these two helpful guys, Anthony Hoffman from amiga.serveftp.net and Jean-Jacques Boulet from www.amigacenter.com. If breaks some day, they can fix it! :-)

[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.

[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.

[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.