Introduction - New Amiga owner

[Cammy]

Is it a blank green screen or is it a green-tinted display, showing the Kickstart screen?

[ramis77]

Thank you very much for your help!
 
Although today I am very dissapointed, I will do my best to repair it!
 
I´m going to start inmediately to follow your instructions.
 
I promise to report it!

[ramis77]

It is a blank green screen. I have just realized that at first it is orange but turns into green in less than a second...

[ramis77]

I extracted Denise, Paula, Gary, Odd CIA A & B, and 68000. It doesn´t work yet. Waiting for the special tool to extract Agnus...

[EvilGuy]

I saw the topic and thought, "Wow, Amiga has been sold again".

Then I read the post and thought it was a lot more interesting So "Hi!".

[ferix]

Green screen can be as result of a bad ram chip too, so try this:
Turn on the computer, and wait for all chips to become warm.
Now, touch every ram chip, and if one of them is too hot, probably It's a faulty chip...

[DavidF215]

Hi, Ramiro. Welcome to the Amiga community.

For some system information goto your System volume, then to the Tools drawer, then the ShowConfig icon. It should show Version information, RAM information, and other hardware that is installed. This works on an A1200 and I presume it should be the same for your A500. I'm sure someone here will correct me if the A500 is different.

[tiffers]

At the internal side of the switch there are 2 cables that are solded to the expansion card (they are OK) and 3 cables that go towards the Amiga mainboard (2 of them are desolded from the switch)

Sounds like someone's done the 1MB chip RAM hack, and made it switchable. If those wires have come off the switch lugs, you'll have a very confused Amiga! Even with them on  and working, you would need the expansion ram to be working with the switch in one position, but possibly would work without it when the switch is in the other position. (How many positions does teh switch have?) Can you possibly attach some digital photos of your Amiga board, especially where the wires attach to the motherboard?

First order of business is to find the 1MB Chip RAM hack and verify that the wires to the mainboard are in the same locations.

Is it easy to get and replace that battery or maybe I should look for a new expansion card?

If the battery has damaged the card, you may not get it working by removing or replacing it. If actual data bus tracks are damaged, you will need to get another expansion card. These are plentiful as almost everyone had them.

[tiffers]

For some system information goto your System volume, then to the Tools drawer, then the ShowConfig icon.

You would of course need a WORKING Amiga before you could do ANYTHING in 'Workbench'. The ShowConfig util is found in Workbench 2.0 and above.

Once you get your Amiga working, you can move on to bigger things :-D

[ramis77]

thank you all for your replies!
I am going to work, but this afternoon will check the temperature on chips and will take some pics.

[Karlos]

Welcome aboard

[Gulliver]

Hi, and Welcome!

[ramis77]

I have checked the chips whith the computer turned on and:
DENISE, PAULA, GARY, 68000 and AGNUS heat up, but I think memory chips do not.
I enclose 3 pics:
1) Amiga board general view
http://img267.imageshack.us/i/dscn3202n.jpg/
 
2) Expansion wires joint to board
http://img691.imageshack.us/i/dscn3203b.jpg/
 
I tried to join the ends of these three wires between them and it all was the same.
 
3) Expansion card
http://img222.imageshack.us/i/dscn3204.jpg/
 
 
Before turning green, the screen is sometimes orange, sometimes pink for less than a second!!
 
I have a voltmeter, could it help? Any idea?
 
Saludos,
 
Ramiro

[ferix]

Ok, now I see what is happening.
This wiring is for changing the mapping of the expansion board, from chip to fast.
Now I'm at work, so I can't check It, but what you need is to join the center pin of JP2 with one of the others, but only one, not both.
At first, we will try to boot without the expansion board.
As soon as I can confirm the original position I'll tell you.