Oscilloscope Repair Help

[booboojerkers]

Hi,

I have come across an old Tektronix 2230. It powers up and does have a display but with only a single dot. With the little that I know about troubleshooting scopes, this may indicate something wrong with the horizontal section (sweep generator locked up?).

Any suggestions on how to approach this fix? The beam is not moving on the time x axis as a scope typically does when you fire it up.

If this scope is going to cost me an arm and a leg to fix this type of issue, It may just be more worth it to spend a few hundred $ to get something that's already in working condition.

Any feedback is greatly appreciated.

Thanks,
Robert

 

[mister_e]

Depending of your electronic repairs skill, there you could buy a service manual for about 12$
Service-Manual_net
Service-Manual_net

 

[booboojerkers]

Thanks, there's a start...got one!

Anybody else have any feedback on how to approach this fix or run across this type of issue before?

 

[Matsukaze]

You can find manuals for lots of older equipment at the **broken link removed** or its mirror site. There's a Tektronix training manual with general troubleshooting information. You could also join the **broken link removed**

 

[booboojerkers]

Thanks a lot! Got the manual. That's an extremely helpful site.

Has anybody encountered this type of issue before with an O-scope repair?

thanks!

 

[kchriste]

The beam is not moving on the time x axis as a scope typically does when you fire it up.

Do you get a vertical line if you apply an AC input signal to the scope?
I assume you don't have the scope in XY mode.
What does it do in XY mode if you apply the same signal to both channel 1 & 2? If you get can get a line at 45 degrees after adjusting Volts/Div of both channels the same, then both the horizontal and vertical deflection circuits are OK.

 

[Mikebits]

I was thinking maybe the beam finder button was stuck...