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Author Topic: Amiga 3000 w/ Dell ST2410 Issue  (Read 578 times)

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Offline dudeslifeTopic starter

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Amiga 3000 w/ Dell ST2410 Issue
« on: July 24, 2017, 03:13:25 AM »
I picked up an Amiga 3000 and I am trying to use it with a Dell 2410 Monitor w/VGA but the screen is like "wavy"... not flickering.. Is there a solution or will this monitor not accept the 31hz? Any ideas? Thanks in advance. Giant Picture included. :)

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Offline Oldsmobile_Mike

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #1 on: July 24, 2017, 03:15:57 AM »
Doesn't the A3000 have an adjustment knob on the back for its 31KHz output?
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Offline giZmo350

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #2 on: July 24, 2017, 03:27:07 AM »
@dudeslife

also, doesn't your camera and/or graphics app have an adjustment knob on the back to scale down that posted pic?  :hammer:
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Offline Kremlar

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #3 on: July 24, 2017, 03:51:24 AM »
Yes, adjust that knob with a small screwdriver carefully and slowly.
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Offline dudeslifeTopic starter

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #4 on: July 24, 2017, 04:31:02 AM »
Quote from: gizmo350;828618
@dudeslife

also, doesn't your camera and/or graphics app have an adjustment knob on the back to scale down that posted pic?  :hammer:


smaller pic would not have illustrated the issue as well...
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Offline dudeslifeTopic starter

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #5 on: July 24, 2017, 04:37:24 AM »
Quote from: Kremlar;828619
Yes, adjust that knob with a small screwdriver carefully and slowly.


ok thanks. I will check this out. would you happen to know clockwise or counter?
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Offline Matt_H

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #6 on: July 24, 2017, 04:53:38 AM »
Quote from: dudeslife;828621
ok thanks. I will check this out. would you happen to know clockwise or counter?


The official procedure is essentially "adjust it either way it until it looks right" :)

If you're getting resistance, don't force it - it probably means the screw has gone as far as it's meant to in that direction. Turn it back the other way.

A more worrisome possibility: battery leakage in the 3000 has been known to damage the video circuitry. Have you removed the battery?
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Offline Oldsmobile_Mike

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #7 on: July 24, 2017, 05:04:19 AM »
Quote from: gizmo350;828618
also, doesn't your camera and/or graphics app have an adjustment knob on the back to scale down that posted pic?  :hammer:

:laughing:

I still don't understand why people can't just use the built-in forum tools for attaching pictures to posts, neat and easy.  But eh, since when did Amiga users ever follow the rules?  :D
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Offline dudeslifeTopic starter

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #8 on: July 24, 2017, 10:17:08 PM »
Quote from: Matt_H;828622
The official procedure is essentially "adjust it either way it until it looks right" :)

If you're getting resistance, don't force it - it probably means the screw has gone as far as it's meant to in that direction. Turn it back the other way.

A more worrisome possibility: battery leakage in the 3000 has been known to damage the video circuitry. Have you removed the battery?

I am not seeing what kind of screw that is in the little hole next to the enable/disable switch.. flat or phillips head? and yes, I removed the battery but there was old corrosion there..

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Offline Oldsmobile_Mike

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #9 on: July 24, 2017, 11:52:38 PM »
Omg that is a terrific amount of battery damage!  :( :( :( :(

You need to get that thoroughly cleaned up and repaired before going any further.

Also from the picture you can see that your Denise chip isn't seated properly.

But FWIW, the screw is on the outside of the case, on the back, right next to the VGA connector.  Shine a flashlight in there if you have to.  See this picture:
« Last Edit: July 25, 2017, 01:19:05 AM by Oldsmobile_Mike »
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Offline dudeslifeTopic starter

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #10 on: July 25, 2017, 02:00:28 AM »
Quote from: Oldsmobile_Mike;828664
Omg that is a terrific amount of battery damage!  :( :( :( :(

You need to get that thoroughly cleaned up and repaired before going any further.

Also from the picture you can see that your Denise chip isn't seated properly.

But FWIW, the screw is on the outside of the case, on the back, right next to the VGA connector.  Shine a flashlight in there if you have to.  See this picture:


argh.. I live in the middle of nowhere as far as retro computers go.. I don't know how I am gonna get it repaired. do you think the denise chip not seated correctly would cause the wavyness of the video.

also that corrosion is 10 years old at least.. what can I do about that? alcohol and q-tips?
« Last Edit: July 25, 2017, 02:03:22 AM by dudeslife »
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Offline QuikSanz

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #11 on: July 25, 2017, 02:28:43 AM »
OMG! Get that board to Acil fast before it's toast!
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Offline icbrkr

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Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #12 on: July 25, 2017, 02:38:01 AM »
Holy crap.. that thing still fires up?  Yeah... get it fixed before it eats up everything there.

I'll bet something going to the Amber circuit has been eaten a bit.
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Offline Matt_H

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #13 on: July 25, 2017, 03:00:06 AM »
Quote from: dudeslife;828666
argh.. I live in the middle of nowhere as far as retro computers go.. I don't know how I am gonna get it repaired. do you think the denise chip not seated correctly would cause the wavyness of the video.

First step is to clean it up. Sometimes that can be enough. It looks like there's some corrosion in the Denise socket. Pop out the chip, clean, and put it back in. I don't think it's likely that Denise alone is the cause of your problems, but it's possible.

Quote
also that corrosion is 10 years old at least.. what can I do about that? alcohol and q-tips?


Yes, alcohol and q-tips. Acill (a user on this forum) can undertake more serious repairs if that ends up being necessary. I am assuming you are US-based. There are a few others around the world who do board repairs as well.
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Offline QuikSanz

Re: Amiga 3000 w/ Dell ST2410 Issue
« Reply #14 on: July 25, 2017, 03:43:37 AM »
There looks to already be a leg eaten away on the bottom chip to the left of the battery spot. Send it in for complete once over.
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