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  • giobbi's Avatar
    Yesterday, 04:41 PM
    giobbi replied to a thread 8032 CRT issue in Commodore
    I will check it too. Currently I have a very little free time, so I can spend some time fixing vintage computers just at weekend... maybe.
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 24th, 2019, 03:04 PM
    giobbi replied to a thread 8032 CRT issue in Commodore
    I haven't a quality meter, so I think I will pull this step for now, LOL
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 24th, 2019, 03:03 PM
    giobbi replied to a thread 8032 CRT issue in Commodore
    Dave (daver2) told me the same, so I will try to check the H and V drive with a scope. Out of curiosity, if the H or V drive are abnormal, who...
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 23rd, 2019, 02:43 PM
    giobbi replied to a thread 8032 CRT issue in Commodore
    412 VDC? ...I think I will wait for the next week ending, and next saturday or sunday will decide if I'm brave enough to do that LOL
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 23rd, 2019, 06:29 AM
    giobbi replied to a thread 8032 CRT issue in Commodore
    sorry, I didn't realize the image was resized. I mean: http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/pet/8032/321448.gif
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 22nd, 2019, 05:35 PM
    giobbi replied to a thread 8032 CRT issue in Commodore
    I was wondering if it would be a good idea to replace the electrolytic capacitors; shouldn't be an hard task, the PCB is really simple. Would you...
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 22nd, 2019, 04:46 PM
    Hi... you should make a new thread, or it will be really hard to answer to two different people on a similar problem. However in my (little)...
    47 replies | 2858 view(s)
  • giobbi's Avatar
    June 22nd, 2019, 04:40 PM
    With a very little and simple change on the PCB, you can get an S-Video signal from you VIC-20; I did it in one of mine, it gives a really sharp and...
    47 replies | 2858 view(s)
  • giobbi's Avatar
    June 22nd, 2019, 04:38 PM
    I use to remove the heat sinks from burnt PC boards (the small heat sink on the bios, etc.), cut them to fit the IC size, put some thermal paste in...
    47 replies | 2858 view(s)
  • giobbi's Avatar
    June 22nd, 2019, 04:26 PM
    giobbi replied to a thread 8032 CRT issue in Commodore
    Dave, the logic board works fine, the problem was the CRT. However I solved, I had to replace R752 and R753, for some reason both burned out. Unknown...
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 22nd, 2019, 01:15 PM
    giobbi started a thread 8032 CRT issue in Commodore
    Hi all, I have some old PETs, and sometimes I try to fire them up to check if everything is ok. I discovered two of them doesn't work anymore...
    21 replies | 250 view(s)
  • giobbi's Avatar
    June 21st, 2019, 05:00 AM
    I've seen there are terminator packs that fit the scsi connector on the back... can I connect the drive with a 2 connectors flat cable into the inner...
    8 replies | 194 view(s)
  • giobbi's Avatar
    June 20th, 2019, 04:31 PM
    can you give me more info about how to terminate the drive? How should I do that, if I'm using a normal flat cable?
    8 replies | 194 view(s)
  • giobbi's Avatar
    June 20th, 2019, 03:03 PM
    Hi people, I have a Mac SE with 2 floppy drives, and an external (scsi?) HDD. The MAC works fine with this external hd box, booting from it. I...
    8 replies | 194 view(s)
  • giobbi's Avatar
    June 20th, 2019, 08:40 AM
    Hi guys... First of all I have to admit I don't know much about low level programming. I'm trying to make a picture slideshow with music for...
    0 replies | 45 view(s)
  • giobbi's Avatar
    June 17th, 2019, 02:14 PM
    Thank you, it's working fine now. The annoying color problem apparently has gone; yesterday I play a lot with it, no issue. I believe it's some...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 16th, 2019, 01:47 PM
    Frank, you're absolutely right when you say I uses the iron solder too much... I should to learn something more about hardware. So I tried to...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 11th, 2019, 05:09 PM
    I did some steps ahead. I found a couple of bad solders, redone, and now -at least- it's booting. But now I have a couple of issues: 1) the...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 10th, 2019, 05:58 PM
    Here again, I did some more tests and I found the Basic ROM pin 20 is stuck high (and the PLA pin 17 too, obviously). I find the dead test eprom...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 6th, 2019, 03:35 PM
    hey C64, you know what you are? LOL I have to check every solder again... gosh... thank you, I will let you know... one day...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 6th, 2019, 01:55 AM
    Hi Frank. Can you tell me if I can remove some RAM chips without boot issues, like the PET? Yes, I have an USB scope and a probe, but I'm not...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 5th, 2019, 04:35 PM
    Hi Frank. rev. 250425, 1984 (PAL). Of course I'm not LOL. I got this broken C64 I fixed it many years ago. When I finally found the...
    15 replies | 518 view(s)
  • giobbi's Avatar
    June 2nd, 2019, 02:46 PM
    Hi guys, after a long time, I'm here again with my vintage troubles! I have a C64 I use for testing purposes. It's fully socketed. When I fire it...
    15 replies | 518 view(s)
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About giobbi

Basic Information

Age
50
About giobbi
Biography:
I was born in Turin, north-west of Italy. I worked as programmer until 2007, then me and my family teleported ourself (and my C= collection of course!) here in Brazil!
Location:
São Paulo country, Brazil

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