Announcement

Collapse
No announcement yet.

Fluke 6502 pod repair?

Collapse

Anything to do with repairs.

X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #16
    Your scope is showing those signals to be 1/2v in height. Not a good signal for TTL.

    Comment


      #17
      Originally posted by channelmaniac View Post
      Your scope is showing those signals to be 1/2v in height. Not a good signal for TTL.
      Seems that's a normal amplitude for the outputs of this IC, unless I'm reading the datasheet wrong.

      The waveforms are a mess though.
      Sic transit gloria Atari!

      Comment


        #18
        Originally posted by channelmaniac View Post
        Your scope is showing those signals to be 1/2v in height. Not a good signal for TTL.
        I had my scope probe x10 set wrong. oops.

        In other news I've been chatting with Jerry Walker. The fellow who makes 6502 pod reproductions. Together we confirmed it was the POD and not ribbon or cable, the UUT or the Fluke itself. I'll most likely end up sending it up to Jerry in the UK for repairs. I'll let everyone know what he finds.

        Comment


          #19
          Before you do... have you tried replacing the PIA chip in the pod?

          Comment


            #20
            If you have any pinball games you can swap them out

            Comment


              #21
              Originally posted by channelmaniac View Post
              Before you do... have you tried replacing the PIA chip in the pod?
              No I haven't, is the PIA the R6502?

              Comment


                #22
                OOPS... not a PIA, RIOT chip... 6532 - found in Atari 2600s... RAM, I/O, and Timer chip.

                Comment


                  #23
                  Originally posted by channelmaniac View Post
                  OOPS... not a PIA, RIOT chip... 6532 - found in Atari 2600s... RAM, I/O, and Timer chip.
                  You were correct. After months of waiting a new 6532 Chip arrived. The 6502 pod now works again!

                  Comment

                  Users Viewing Topic: 0 members and 1 (guests)
                  Working...
                  X