Amiga.org
Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: gdanko on August 25, 2006, 05:28:25 AM
-
This is one that used to work, too. Now it comes on and just has a dark gray screen. I have put in new ROMS, new CIAs, new Paula, new Western Digital chip, and new Denise and all with the same results.
Maybe my jumper settings are off but they look correct based on a 25 MHz 68030 NTSC unit. Is there something else I can try?
And yes, I removed the battery before it started corroding. :P
-
Mine also has been having problems with black screen fun. I have to reseat my CPU card to get it working, not sure how to fix my problem but you can start there and see if that helps you.
-
TJ,
Do you have an 040 3000T? Mine has an 030/25 on the board so I dont think I need a CPU card in there unless it's a cyberstorm or something.
Gary
-
Check the PSU !
-
I know the PSU is working, the fan kicks in and whatnot. Also, when I hit Ctrl-Amiga-Amiga the caps lock key blinks once. Isn't that a good sign?
Maybe the video is hosed?? Which chip(s) handle the video?
-
I know the PSU is working, the fan kicks in and whatnot.
That does not really tell you if the psu is working correctly.. The fans can spin up even if you miss some voltage or if the voltage is all wrong. The only way to find it out is by trying another psu or using a voltage multimeter to see that the voltage levels is in normal margins.
-
I have a multimeter.. how do I test it?
And one question. Lots of people keep mentioning the CPU card. This 3000 seems to have an 030/25 on the main board. Is it safe to assume I do not need a CPU card in this case?
-
I have a A3000T with a CyberStorm MKII 060 in it. Lately I have to open it up and reseat the CPU card to get it to work! But it does work. No leaky batt either and PS is fine. Just a bad connection.
-
When my A3KT doesn´t start I reseat the chipram. Then it starts again. Just a tip. :-)
-
ZIPs are a pain to re-seat. :(
-
Hi,
the A3000T has -- as the desktop-model -- an onboard CPU and FPU, so you don't need a processor card.
Does the power-LED comes bright, i.e. during a reset the LED is less bright until the system has performed some internal tests than -- just before the boot-process starts -- the LED gets bright. If it doesn't get bright, you have a hardware problem as a defect CPU or any other chip. If it gets bright the system may only have a defect video-output, in that case the floppy drive should "click" and you may insert a disk and boot the Amiga (the drive should start spinning and reading the floppy).
Noster
-
The blue cable that connects the power LED is stashed somewhere ;) I will dig it out and plug it in to see!
I will also insert the drive bay module to listen for a drive click.
-
The LED stays dim :(
I have a Super Buster 11.. doesn't that require 3.1 ROMs?
Also, there is nothing plugged into the system at all, except for the PSU and power LED. Even the key lock is not plugged in, would that matter?
-
When was the last time you had the system running ok? What have you added/altered since? Try to isolate the problem that way before you do anything else. No point in reseating every (non moving!) part you can think of, right?
-
I have a Super Buster 11.. doesn't that require 3.1 ROMs?
Naw... SuperBuster 11 was out well before the 3.1 ROMS even existed. It should boot fine with any version ROM the 3000T does.
-
Its been a number of months actually. I think it was when I was using clean pieces from my 3000T to restore my 3500. At one point I thought the PSU in the 3500 may have been flaky but I put the known good/booting 3500 PSU into my 3000T and it still would not boot.
I hooked up a floppy drive, hard disk, and cdrom last night to make it complete.. No luck.
What exactly does it mean when the LED does not go from dim to bright, besides "something is wrong"?
-
Also tried a 2.04 ROM and that didnt change anything. There is no battery leakage on the board. Wondering what else may be awry.
-
The A3000T does not require an added processor card. The key switch is to lock-out access to the keyboard and mouse. Useful with display setups when you want to limit access.
Assuming the daugther card is plugged in, and nothing else, you still should have gotten the "INSERT" AmiagDOS screen.
Will try to send you a few files I have on the A3000T.
-
Make sure the external SCSI is terminated or it will not boot all u will get is a black screen. Happened to me recently. I just put a DB25 terminator on the back.
-
@TjLaZer,
If a 3000T doesn't have this terminator or if the terminator is malfunction. Do I only get a blackscreen?
Does the floppy drive clicks? I got a 3000T with power on but only a black screen. Harddisk startup spinning but no click sound from the floppy drive.
Patrick
-
Same thing. Black screen and nothing else. I can check the termination but there are no SCSI devices plugged in.
-
Yes the machine will act like it is dead and just a black screen with HD lights ON.
-
I shouldn't need an exterminator though should I? I have no SCSI devices plugged in. Do you mean those little comb-looking devices?
-
Solved. It was indeed the PSU plus a CIA with 2 bent pins. I had tested the other PSU before noticing the pins on the CIA were bent so by the time I had figured out the pins were bent I had already ruled out the PSU as having failed. I am sending the flaky PSU to Ray Carlsen for repair. His estimate is 25-35. So I loaded the 3000T with a Picasso II, and Ariadne, a 3640 rev 3.1, and a Fastlane Z3 with 32M fast RAM and booted off a 3.1 disk. Was happy to find 40 MB fast RAM :)
-
Ta daaa! Amiga.org to the rescue! Good work guys. :banana:
-
@gdanko,
Congrats at getting your A3000T working!
Now, when you want to sell or trade it, let me know. It is the last Amiga model I need for a complete collection of Amigas.
-
Sorry sir. It is not for sale. I *THINK* I have most of them.
1000 - Yes
500 - Yes
2000 - Yes
1500 - No
2500 - Yes
2500UX - No
3000 - Yes
3000UX - No
3000T - Yes
3500 - Yes
4000 - Yes
4000T - Yes
1200 - Yes
600 - Yes
Thanks again for everyone's help.
-
Glad to read about your sucess in solveing the problem..I hope the have the same
with regards to my A4000T problem..
Good Luck and take care
Rich
-
Whats wrong with your 4000T?
-
The last one I need is a CBM A4000T!
-
We could also say Walker too.. :P Thats about the same liklihood. :P
-
gdanko,
My 4000T seems to not be able to output display to my CV64..and all
drivers are current and in the right place. I have tested the card elsewhere
and she works just fine. The tower is an 060..and all files are installed
correctly..ie the libs files are just fine. All the normal amiga modes work..
sys info shows card being present and working..just when I go to switch
modes I get nothing..Oh and I seem to have a 12v loss on my Serial connector
on the back of the machine..and I think these problems are related somehow..
there you have it in a nutshell..
thanks for asking
Rich
-
Hmm try posting on suczz's yahoo group Commodore_Amiga_Retro. A lot of useful help there.
-
gdanko..
I will check that out..thanks for the info..
Rich
-
Have you tried all of the Zorro slots? Perhaps you are not getting enough power to your Zorros. I am sure there's a way to test the power output with a voltmeter. Do other Zorro cards work in your 4000T?
Try finding out what the power output for a Zorro slot is supposed to be and hooking a voltmeter up to it (see how to do so) and verifying it's putting out what it needs to.
If the PSU is flaky you can send it to Ray Carlsen for repair. He will be repairing my 3000T PSU shortly.
-
@gdanko,
Thanks again for all your help..as far as testing all the Zorro slots..I did
test the CV64 in all the slots and same result.
I will have more time this weekend..to devote to my 4000T..and I hope
it is something simple like the PSU..and not some leaky Caps..doing
damage to my motherboard..
Take care and have fun
Rich
from
NY
-
gdanko wrote:
3000T will not boot Solved. It was indeed the PSU plus.... I am sending the flaky PSU to Ray Carlsen for repair. His estimate is 25-35.
Got an address or phone for this Ray.
My A3000T up and quit a few years ago. Could have overloaded the PS. Just when I got it all together:
stock A3640 v3.0
16meg zip / 2meg chip
Fastlane ZIII with 64 meg ram
AD516 with a dedicated disk 4 gig HD on the stock scsi chain.
Personal Animation Recorder with 2 4gig HDs
TBC IV
Video Toaster 2.0 running 4.2
Right now its stripped down to just the floppy, the stock A3640 and a terminated external scsi port, and a 15khz RGB monitor. I get dim green power light when powered up. No monitor color changes, no "insert Disk" anim. Reset all the chips including the CPU.
Noster stated...
-- just before the boot-process starts -- the LED gets bright. If it doesn't get bright, you have a hardware problem as a defect CPU or any other chip.
I would sure hate to take the Warp'40 out of my A4000. Although at the moment, it is a bit more accessable than the one in my A3000.
-
http://personalpages.tds.net/~rcarlsen/
I trust him to work on my C= stuff.
-
@gdanko and T3000
Nice to see some USA boys...and thanks for all the info..and this all
might help my A4000T.
Again thanks.
Peace and take care
Rich
from
NY
-
Yea San Diego was a huge Commodore town :)
-
Maybe someday again..!!!
Rich.