Tek 2235 CRO broken :-(

[firestorm]

Hi,
I've got a Tektronix 2235 dual trace 100Mhz scope, which I've had for years. I haven't switched it on for a couple of years till last night.

At first everything seemed ok, but after 10 minutes, both traces disappeared. Got channel a back by adjusting Y, but can't get it more than 1 cm from the bottom. Channel B can't be seen at all.

Any ideas ?

I've just started diy again, it'll be good to be able to use it....

Thanks

 

[Geek]

Dirty controls/trimmers?

 

[nickds1]

TekScopes group on Yahoo is your friend😉

 

[firestorm]

any one taken one of these apart before ?
or better still fixed one?

I'd like to get it going before starting my next project.

Cheers

 

[nickds1]

any one taken one of these apart before ?
or better still fixed one?

I'd like to get it going before starting my next project.

As I said in my previous post, the only really place for support for this would be the Yahoo TekScopes group. They are very good and very helpful - what's more, a number of ex-Tek service engineers hang out there...

Cheers

 

[firestorm]

point taken - thanks for reminding me Nick