A4000T not giving video output from my Cybervision64 Card

[Vlabguy1]

Yes please share how you did it??

thanks
Rich

[Vlabguy1]

@yogisumo..

No worries ..I will post all my results..tomorrow when I solve this prob. of mine.
I will be working on for as long as it take this weekend..and I hope that by the
afternoon I should know more and have it fixed, yeah boyee..unless ofcourse
it turns out to be my motherboard.in which case I will be one BUMMED out man.

Take care everyone!!
RichfromNY

[Vlabguy1]

Thank you Pierre for your kind words...and I look fwd to hearing what you did once..

Peace2everyone
Rich

[Vlabguy1]

pierre,

Well here is the bad news...  I took my CV64 card out of my 4000T060 and
put it in a 4000Desktop.  Installed cybergraphxV4(fresh install) with the pass-
through cable hooked up and the output from the CV64 going to my Idek 17"..All
worked well..upon reboot the cybergraphx logo came up ..then the standard
Amiga mode came up with Workbench(OS3.1)..all is well.  I selected a CV sscreen mode  ..and it worked..no problems no issues.  This tested the monitor
and the card all that used to be hooked up to my 4000T...
So I took everything out reinstalled the CV64 card into my tower..made sure I
did not have any old versions of cybergraphx on the HD of the 4000T..I did
a fresh install of the cybergraphixV4(oh just so you know I had the pass through hooked up as well, and worked fine)..I used the same options as I did when I installled the software on the Desktop..well the software installed just fine
well when I went to change into a cybergraphx mode..the screen goes blank..
I get nothing.
When I do a reboot I get nothing..not even a standard amiga screen through the pass through.
I think my motherboard is toast!!  Anythoughts..
I also check all my ports on the back of the computer..and it seems that I have a loss of -10v and +10v on my serial connector??  What is that about?
Is there anyway I can get pinouts for ports of 4000T which shows voltage details..and also..a Zorro 3buss pinout.adn possibly the CV64 ouput pinout..
I will soon test other cards..scsci, Retina, toaster, etc..
My only alternative might be a Cyberstorm PPC with the graphics card option?
Could this be a powersupply issue?

Im bummed out to say the least..
Well there is the update!!  The not sooo good news..
Take care and thanks
Rich

[Vlabguy1]

Patrik,

If and when you get a chance check out my lasted post regarding this problem..

Thanks
Rich

[Vlabguy1]

Patrik,

Thanks for the info.  I will be honest with you regarding the Powersupply connetctor issue, is that the machine prob has a total about 50hrs on her..
and NEVER left on for any period of time unless I was useing the machine.
but I will check the connectors.

Could the fact that I have a -12v/+12v loss on the serial connector have
anything to do with anything??

Im trying to locate a set of schematics for the 4000T motherboard..as well
as all the appropriate voltages for every connector on the back of the machine
including the CV64.  

I can and will try the org. CPU card and I will also verify the 040.lib

thanks again and will keep everyone posted..I will be trying other
video cards as well ..
Oh here is another thought..Has anyone heard of ploblems with the
A4000Ts A/V module..ie leaking caps..could this module have caused
some damage or is damaged..I will check to see if mine is ok..
So why do I have a loss of 12v..on the serial connector?


Peace and take care
Rich

[Vlabguy1]

quenthal,

Yes I will check the power supply..but do you think that has anything to
do with the CV not giving me an output??  and or anything to do with
the loss of +12v/-12v??

Thanks.
Rich

[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

[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

[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

[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?

[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

[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!!