Re: Fwd: Fluke 9010A Display problem

OPS!!!!!

Instead of MC14095 is MC14094 and instead of CD4095 is CD4094.

Sorry for the confusion.

JL

On Mon, Mar 4, 2013 at 10:02 PM, Jose Luiz Martins
<joseluizmartins@gmail.com> wrote:
> Good news!
>
> Replaced the 14095 with a cd4095 and worked great!
>
> Now i have the display working again.
>
> Thanks!
>
> JL
>
> Em 04/03/2013 13:49, "Jose Luiz Martins" <joseluizmartins@gmail.com>
> escreveu:
>
>> Thanks John,
>>
>> After a close inspection, I realise that the display test was showing
>> the number 8 on all segments.
>>
>> According to service manual the ICs 12 and 14 are responsible to drive
>> the "internal part" of each segment, and the ICs 11 and 13 the
>> "external part".
>>
>> A number 8 uses only "external" filaments and athe letter K, for
>> instance, uses some "internal" ones.
>>
>> Put my scope on IC 14 and no action on output pins...
>>
>> Today i'll try to buy one mc14094bcp on some local store, and see what
>> happens...
>>
>>
>> Thank you guys!
>>
>> JL
>>
>> Enviado via iPad
>>
>> Em 03/03/2013, às 16:06, John Robertson <jrr@flippers.com> escreveu:
>>
>> > John Robertson wrote:
>> >> Jose Luiz Martins wrote:
>> >>> Hi !
>> >>>
>> >>> Today I've decided to put my 9010A back to work after 5 years.
>> >>>
>> >>> It boots OK, but the display is not showing some parts of some
>> >>> letters. For instance the K and V looks like I.
>> >>>
>> >>> I opened and performed the display test, as mentioned on Workshop
>> >>> manual, and everything seams to be right.
>> >>>
>> >>> Any clue on that ?
>> >>>
>> >>> Thanks
>> >>>
>> >>> JL
>> >>> ___
>> >>
>> >>
>> >> Haven't done the display test in years - does it check every segment?
>> >> If so, and the segments all light up as they should then you may have a ROM
>> >> issue where some of the ASCII code text in the text tables is defective.
>> >> That is just a guess, you can check against the code on the ftp site to make
>> >> sure the base ROMs are all good.
>> >>
>> >> Anyone else with a guess?
>> >>
>> >> John :-#)#
>> >
>> > Could be the decoder for the display, sounds like it handles individual
>> > segments OK, but may a problem with combinations needed to build letters...
>> >
>> > John :-#)#
>> >
>> > _______________________________________________
>> > Techtoolslist mailing list
>> > Techtoolslist@flippers.com
>> > http://seven.pairlist.net/mailman/listinfo/techtoolslist
>> > FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment
>> > Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
_______________________________________________
Techtoolslist mailing list
Techtoolslist@flippers.com
http://seven.pairlist.net/mailman/listinfo/techtoolslist
FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment
Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Received on Mon Mar 4 21:23:50 2013