http://img354.imageshack.us/img354/6272/2213ob0.th.jpg (http://img354.imageshack.us/my.php?image=2213ob0.jpg)

Hi, I just picked one of these up for a reasonable price off eBay. It turns on, and I get a dot in the middle, but I have no probes or anything. I found and downloaded the service manual, but have yet to make heads or tails of it. First off, does anyone have any recommendations for probes that I should try picking up? I don't know what else to do to make sure the thing works, I assume that fooling around with my CD player's output once I have probes should give me more of an indication...

http://www.tek.com/Measurement/cgi-bin/framed.pl?Document=/Measurement/App_Notes/XYZs/&FrameSet=oscilloscopes

It may help you out.....

I gotta scrounge for some probes for my HP one of these days.:sigh:

Unfortunately, this is what I got after fiddling with a few settings. Bad, I assume?

http://img406.imageshack.us/img406/2126/2213badci6.jpg (http://imageshack.us)

Flipping the thing over, I saw a few areas with burned components. The Sharpie writing on the board confirmed my suspicions that someone else had tried to service this scope. A bunch of screws are also missing from the chassis, and some of them looked a bit chewed up. I guess he wasn't very good at repairing things...

http://img409.imageshack.us/img409/1720/2213p1dk4.th.jpg (http://img409.imageshack.us/my.php?image=2213p1dk4.jpg) http://img261.imageshack.us/img261/7121/2213p2tv7.th.jpg (http://img261.imageshack.us/my.php?image=2213p2tv7.jpg)

http://img261.imageshack.us/img261/5166/2213p3hl4.th.jpg (http://img261.imageshack.us/my.php?image=2213p3hl4.jpg) http://img409.imageshack.us/img409/9818/2213p4hr0.th.jpg (http://img409.imageshack.us/my.php?image=2213p4hr0.jpg)

Sorta looks like and attempt to repair a cracked PC board.Pi** poor job. Most of the brown is old solder resin should clean off with IPA OK.First I would clean up the old flux then reflow the solder connections.Then see what happens.

Dave

OK. I might as well replace all the electrolytics as well. One of the control PCB's has 1979 listed as the date, nothing good can happen to those suckers in 28 years.. I'll also lift and check the resistors above the brown patches. I assume that they're brown due to heat damage?

Sounds like lots of fun.........:scratch2:

Stupid question: Are you sure it's not set in the X-Y mode?
Could you post a pic of the front panel?

Sounds like lots of fun.........:scratch2:Umm, yeah. A project for a rainy day. Maybe a rainy week. Rainy year? :drool:

Stupid question: Are you sure it's not set in the X-Y mode?
Could you post a pic of the front panel?I messed with every switch/knob there is. Most of the time it's a dot, only by doing something kind of specific was I able to get it to look like this.