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Author Topic: My new Amiga 4000T - work in progress  (Read 17369 times)

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Offline Ami_GFX

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Re: My new Amiga 4000T - work in progress
« on: April 12, 2012, 03:54:49 PM »
Just something to look at. I had an A4000D a couple of months ago that had no video output. At first I thought it was the motherboard but it ended up being a bad power supply--specifially the +12 volt out was bad.

This is assuming the screen is totally blank. If it is black, the motherboard is probably good and the CPU card is not working. In the A4000D I'm referring to, I got the video to go from blank to black which told me the motherboard was ok by putting in a good power supply.
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A2500 owned since 1993 with A2630/DKB 2632, DKB Megachip, GVP EGS Spectrum, A2320 and GVP HC+8 on the inside and a DCTV on the outside. A4000D with CSPPC, Cybervision 64 and a Flicker Magic flicker fixer. A4000T Toaster Flyer & CSMKII. All systems completly retro and classic and mostly used to do geometic art as in my avatar.
 

Offline Ami_GFX

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Re: My new Amiga 4000T - work in progress
« Reply #1 on: April 13, 2012, 03:20:04 PM »
Seconded. Black screen and caps lock going off after a few presses indicates no CPU or CPU not working. The motherboard is working. Remove the CPU and you will get the same results.
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A2500 owned since 1993 with A2630/DKB 2632, DKB Megachip, GVP EGS Spectrum, A2320 and GVP HC+8 on the inside and a DCTV on the outside. A4000D with CSPPC, Cybervision 64 and a Flicker Magic flicker fixer. A4000T Toaster Flyer & CSMKII. All systems completly retro and classic and mostly used to do geometic art as in my avatar.
 
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