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Author Topic: Amiga 4000T Mediator issues  (Read 2389 times)

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Offline AppleIIGuyTopic starter

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Amiga 4000T Mediator issues
« on: February 16, 2019, 10:11:54 AM »
  I recently pulled my 4000T out of storage after powering it on it booted but all my pci cards were not working.  The Mediator shows up in sysinfo but pciinfo is showing weird results. I tested all the cards in a pc and they work. I think i might need my zorro/pci bridgeboard repaired...

My Mediator
Quote
Pci Device 1:
   VendorID: $90ec
   VendorName: Unknown
   DeviceID: $8139
   DeviceName: Unknown
   ClassCode: $20080
   RevisionID: $10
   InterruptPin: 0
   SubsystemVendorID: $90ec
   SubsystemID: $8139
   IOSpace0: $40c06000 - $40c060ff
   MemSpace1: $50000000 - $500000ff

Pci Device 2:
   VendorID: $9033
   VendorName: Unknown
   DeviceID: $3d
   DeviceName: Unknown
   ClassCode: $c8f90
   RevisionID: $43
   InterruptPin: 0
   SubsystemVendorID: $9033
   SubsystemID: $3d
   MemSpace0: $50001000 - $50001fff

Pci Device 3:
   VendorID: $9033
   VendorName: Unknown
   DeviceID: $3d
   DeviceName: Unknown
   ClassCode: $c8f90
   RevisionID: $43
   InterruptPin: 0
   SubsystemVendorID: $9033
   SubsystemID: $3d
   MemSpace0: $50002000 - $50002fff

Pci Device 4:
   VendorID: $9033
   VendorName: Unknown
   DeviceID: $ea
   DeviceName: Unknown
   ClassCode: $c8ba0
   RevisionID: $4
   InterruptPin: 0
   SubsystemVendorID: $8ee4
   SubsystemID: $89e
   MemSpace0: $50000100 - $500001ff
 

Offline mechy

Re: Amiga 4000T Mediator issues
« Reply #1 on: February 17, 2019, 01:22:40 AM »
Try reseating the chips in the mediator. might be a case of bad contact.
 

Offline AppleIIGuyTopic starter

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Re: Amiga 4000T Mediator issues
« Reply #2 on: February 17, 2019, 02:02:04 PM »
Yeah no dice... even checked the contacts..
 

Offline goldfish

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Re: Amiga 4000T Mediator issues
« Reply #3 on: February 27, 2019, 08:57:06 PM »
Try just gfx card
 

Offline arttu80

Re: Amiga 4000T Mediator issues
« Reply #4 on: February 27, 2019, 09:15:39 PM »
If PSU isn't up to it anymore? I mean, storage isn't doing any good to it's caps, would try another known good one.
 

Offline AppleIIGuyTopic starter

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Re: Amiga 4000T Mediator issues
« Reply #5 on: March 01, 2019, 04:48:16 PM »
Have a 650 Watt PSU....
Have tried Just GPU, Just Eth, Just USB.. none work..
« Last Edit: March 01, 2019, 04:49:50 PM by AppleIIGuy »
 

Offline slaapliedje

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Re: Amiga 4000T Mediator issues
« Reply #6 on: March 06, 2019, 12:29:04 AM »
Have a 650 Watt PSU....
Have tried Just GPU, Just Eth, Just USB.. none work..
I have a 4000D, but that said the rest of the cards won't work if the GPU isn't in there.  But I'd re-seat the board to make sure it's in there.  Also might need to recap your motherboard.  After I did those two things, mine has been running like a champ, but would randomly do that before.
A4000D: Mediator 4000Di; Voodoo 3, ZorRAM 128MB, 10/100mb Ethernet, Spider 2. Cyberstorm PPC 060/50 604e/420.
 

Offline Akiko

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Re: Amiga 4000T Mediator issues
« Reply #7 on: March 29, 2019, 09:26:24 AM »
Have you had this problem resolved yet?

If not before you replace the Mediator I recommend if it's possible that you also test some other ZIII cards in your 4000T to make sure they are functioning properly, as a faulty motherboard can also cause these symptoms.

My 4000T came out of storage several months ago and it had developed some issues, the IDE was dead, and it wouldn't detect any fast memory.  I sent it away to be repaired and the technician recapped the motherboard, fixed a trace, and replaced some blown buffer chips.  The 4000T came back with the problems I reported fixed however I then found that ZIII operation didn't work properly while ZII mode for some reason works perfectly.  My Meadiator exhibits the same problems as yours, cards are recognised but not functioning, also my Deneb USB card is recognised as ZIII but only works when the jumpers are switched to ZII and using those drivers.     

I haven't had time yet to get another round of repairs done on my motherboard, but I was in touch with the technician again and he believes the likely culprit is more faulty buffer chips are a problem with the Buster.  I did a Google search at the time and found some others in the past had problems with ZIII on their 4000's attributed to the buffer chips.   This of course might have nothing to do with the issues you are having with your Mediator, but's just to make you aware that a messed up motherboard can cause all sorts of weirdness.
« Last Edit: March 29, 2019, 09:33:22 AM by Akiko »