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  1. Ok, 19,06 V with the scope on test point1.

    Ok, 19,06 V with the scope on test point1.
  2. ok, IC901: INPUT:32V OUTPUT:23,6V

    ok,
    IC901:

    INPUT:32V
    OUTPUT:23,6V
  3. Hi Daver2, i saw TP1 voltage on pcb and i read...

    Hi Daver2,
    i saw TP1 voltage on pcb and i read 23,2 V...
    where i can see video signal with scope??
    Thanks
  4. Thanks so much Daver2, you re always great! I...

    Thanks so much Daver2, you re always great!
    I try to check your suggest ;)
  5. Commodore Pet 8032SK with monitor not working

    Hello guys, i'm sorry but im still here asking for help please!
    I have a Cbm Pet 8032 SK 100% working but with monitor not working....
    Can someone help me repair it please?
    Thanks so much!

    Ps:...
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    56757

    56757
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    Thanks Dave!! Thanks at all members for helping...

    Thanks Dave!!
    Thanks at all members for helping me ;)
    Ok i'll open new post for the other Pet...i hope that my little scope it should be enough....

    See you soon
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    Yes sorry it's UI10! No there is not that...

    Yes sorry it's UI10!

    No there is not that machine that you remember....it's another one ;)

    Thanks Daver2!
    Good bless you and all UK! ;)
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    Yes!!Finally! I found the last culprit! Looking...

    Yes!!Finally!
    I found the last culprit!
    Looking at the ram schematic, I tried to piggyback the two 244s and fortunately I saw that with one of these, the defect disappeared..
    so i changed UH10 and...
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    Daver2 keyboard works correctly....i I've...

    Daver2 keyboard works correctly....i
    I've already tried all the keys on the basic screen
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    DAVER2 now we are at 000026 pass......can i stop?

    DAVER2 now we are at 000026 pass......can i stop?
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    Ok, maybe pin number 9 ;) Now screen show pass...

    Ok, maybe pin number 9 ;)

    Now screen show pass 0000c.
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    Now we are on pass 00007 and it's ok.... but...

    Now we are on pass 00007 and it's ok....
    but screen are disturbed....words wobble and flicker on the screen...
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    Great Daver2! I checked Ram ic in UJ5 and i saw...

    Great Daver2!
    I checked Ram ic in UJ5 and i saw that ic ram has one folded contact leg....
    i fixed it and now i try to run test!
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    Daver2 now i have error on the first pass! 4000...

    Daver2 now i have error on the first pass!
    4000 10 ef
    56753
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    Yes always same values: b=7800 c=3038 d=506a...

    Yes always same values:
    b=7800 c=3038 d=506a f=7c98

    can i try to run pettester again for 1 hour....
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    I tested rams for many passes..... 0 to 9 and...

    I tested rams for many passes..... 0 to 9 and afer again...
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    Hi Daver2, i changed only 164 and l04...

    Hi Daver2,
    i changed only 164 and l04 chips...and some ram chips...

    whit the pettester in ud8 socket, i ve always same checksum for each rom.
    Here you can see a little video that showing...
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    I also unsoldered the bank 1 rams and i changed...

    I also unsoldered the bank 1 rams and i changed chips...
    now the test is not giving any error but I still have the same problem as the ram size....
    change every boot :(

    is there any integrated...
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    Now i have all the original rams ;) Also with...

    Now i have all the original rams ;)
    Also with new rams nothing change...can i try to desolde also bank 1 rams?

    56744
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    This is another test and i can read "0ee2" 56743

    This is another test and i can read "0ee2"
    56743
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    Daver2 how can i know if error come from bank 0...

    Daver2 how can i know if error come from bank 0 or 1 ??Thanks!
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    I inserted Cia and Via for keyboard values= 00 ;)...

    I inserted Cia and Via for keyboard values= 00 ;)

    Yes bank 1 are the original again....
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    Update: 56739 56740

    Update:
    56739
    56740
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    I tried to do the pettest again but it seems to...

    I tried to do the pettest again but it seems to never end ... how long does the test usually take, 1 hour?
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