[Techtoolslist] Fwd: Fluke 9010A Display problem

[Jose Luiz Martins]

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 at 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 at 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 at 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 :-#)#

>> >

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