My sad collection of dead Horizon cards...

[aftyde]

Hi All,

I am now up to two dead horizon cards... the latest, to arrive from eBay was poorly packed and a wire came off. No idea where it originated, or to what it was connected. I suspect the card left the shipper in good condition but you know how these things go.

Can anyone recommend someone I could reach out to fix these things. I have two... The other dead card worked at one point, but was taken out when my PEB experienced a voltage spike. Marc Hull was incredible and fixed a PGRAM+ card that was fried by the same spike.

Happy to pay the cost of shipping, parts and labor - would like to get both cards going... Anyone willing to give this old timer a hand? (or should I just wait for the PI in the PEB)

Thank you, Arthur...

[+9640News]

Arthur, if that was a 256K triple stacked Horizon card that had a loose battery connection, I think that was my card from "years" ago. That was my very first card I built in the mid 80's. I sold it to someone, not sure if it was the seller about 4 or 5 years ago. All I could tell the buyer at the time was that when I last used it, it worked. The glue had failed on the battery holder and at the time, all wires were secured.

 

If you look for the 180K upgrade to 256K for the original Horizon ramdisk, there should be directions and it should be obvious where the wire should connect.

 

Beery

[marc.hull]

What model are they?

[aftyde]

Here are some pictures of the new card. In the PEB I have;

1. Flex Cable
2. 32K
3. WHT SCSI
4. SID Master
5. RS-232 w HDX
6. PGRAM+ (Thanks Marc! )
7. Myarc DDCC-1

Have tried picking different / non-conflicting CRU's to no avail. Have examined every solder trace on the board and nothing appears to be split off. Also, the wire in the box is free of solder at each end so I'm suspecting it might be a stray wire in the box and not actually from the card. (it's also black, and there are no other wires on the card that match it - front or back) The batteries, remarkably are good... I am contemplating switching them out with a new set of alkalines but have no idea if that'll have a negative impact on the situation. The rechargeable batteries are charged.

 

I am tempted to press and re-seat, but as most chips are triple-stacked I'm not comfortable prying these bad boys up. See for yourselves...

 

 

 

 

 

 

[aftyde]

It's always interesting to see where these things go. My console is the original I bought in 1981 by way of eBay. Seller in Dallas was unloading a bunch of gear and it appears to have gone from my aunt's garage sale, to his collection, into storage, and then sold on eBay when he realized that 20 or so years later he wasn't going to do anything with this stuff. Still had my Dallas phone number scratched into the underside of the console. Didn't know this until I opened the box and took a look at the machine.

 

Arthur, if that was a 256K triple stacked Horizon card that had a loose battery connection, I think that was my card from "years" ago. That was my very first card I built in the mid 80's. I sold it to someone, not sure if it was the seller about 4 or 5 years ago. All I could tell the buyer at the time was that when I last used it, it worked. The glue had failed on the battery holder and at the time, all wires were secured.

 

If you look for the 180K upgrade to 256K for the original Horizon ramdisk, there should be directions and it should be obvious where the wire should connect.

 

Beery

[aftyde]

Just for kicks, I went through the manual in detail and it looks like this card has the additional 32K chip on it making the TI 32K expansion redundant. Tried pulling the TI memory card and replacing with the new Horizon, no dice. Machine freaked. When reset, it would screech out or land in the F18A screen.

[marc.hull]

Here are some pictures of the new card. In the PEB I have;

• Flex Cable
• 32K
• WHT SCSI
• SID Master
• RS-232 w HDX
• PGRAM+ (Thanks Marc! )
• Myarc DDCC-1

Have tried picking different / non-conflicting CRU's to no avail. Have examined every solder trace on the board and nothing appears to be split off. Also, the wire in the box is free of solder at each end so I'm suspecting it might be a stray wire in the box and not actually from the card. (it's also black, and there are no other wires on the card that match it - front or back) The batteries, remarkably are good... I am contemplating switching them out with a new set of alkalines but have no idea if that'll have a negative impact on the situation. The rechargeable batteries are charged.

 

I am tempted to press and re-seat, but as most chips are triple-stacked I'm not comfortable prying these bad boys up. See for yourselves...

 

image1.jpeg

image2.jpeg

image3.jpeg

 

 

 

 

 

That's a card only a mother could love. Its definately an original HRD maxed out with 8K SRAMS. Wiring appears to be good from the pick.

 

New batteries won't fix it but pushing the IC's may. Couldn't hurt as long as you don't go King Kong Bundy on it.

 

If you need more help shoot me a pm.

 

Marcus.