开云体育

Bonjour sur mon tds744a quand je l'allume, sur l'cran il apparait des bandes horizontal plus lumineuse et de couleur qui défilent verticalement.
Après plusieurs minutes elles disparaissent.

Pouvez vous m'aider??
ou touver les shéma de la partie tube crt et alimentation??
Cordialement
Christophe

Hello,

I am not sure and hopefully others have more detailed experience with helpful feedback.

However, this may help though if you're not aware of... pg. 241 is the Troubleshooting section of the Service Manual:


There are some maintenance figures and instruction starting on pg. 185.

Detailed block diagrams starting on pg. 268.

That manual is found on this page:

Meilleures salutations

Some schematics can be found here too:



In saludo,

Leo

On Tue, Feb 26, 2019 at 4:01 AM oudot damien <lcristoftrain@...>
wrote:

Bonjour sur mon tds744a quand je l'allume, sur l'cran il apparait des
bandes horizontal plus lumineuse et de couleur qui défilent verticalement.
Après plusieurs minutes elles disparaissent.

I had occasional image "tearing" - where vertical lines on the CRT wiggled
to one side occasionally
I re-capped the CRT driver board, which helped for a while. None of the
electrolytic capacitors had leaked, but some of them were getting marginal
on ESR and capacity as I recall.
The actual problem, however, turned out to be a poor connection to the
horizontal yoke. See this message
/g/TekScopes/message/133472 for a description - apparently
others have had the same problem.