This guy is at the thrift store - untested. How can I tell if it works before purchase. Should I take the chance?

This guy is at the thrift store - untested. How can I tell if it works before purchase. Should I take the chance?

Posted Dec 19, 2018, 1:28 AM UTC

4614
Frustrated_Pyro•

Missing an important knob, the horizontal position knob. It should look like the one below it with two knobs stacked on top of each other.

12
M1RR0R•

Knobs can be replaced. Heck, get me specs and help pay postage I'll print replacements.

14
cerealBUS•

I think the inner knob missing is for astigmatism

6
[deleted]•

[deleted]

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[deleted]•

[deleted]

12
devine_diy•

This non-answer is the correct answer.

9
[deleted]•

[deleted]

12
ssl-3•

Indeed. But there's a certain joy in having a working analog scope -- especially if the price is right.

If this thing works, then $49 seems like a fine price. Even if Ebay can supply one cheaper, this one isn't going to get drop-kicked across the continent by UPS between purchase and use.

For audio stuff, my freebie Tek 453 is a joy to use....and, FFS, for audio stuff the not-special sound card in my PC is usually adequate. I'd love to have a Rigol, but I do not want to buy a Rigol.

5
Beer_Is_So_Awesome•

Is this unit adequate for most electronic testing? I don’t own an oscilloscope yet mostly because I’m skeptical that $32 can buy me a worthwhile unit.

Of course, I was told that $15 won’t buy decent digital calipers, and I bought the Chinese ones from Amazon anyway, and they’re amazing.

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[deleted]•

[deleted]

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thirdstripeOP•

Hey everyone, thanks for the input. Asking price is $49.99 as-is and no refunds. I don’t see myself needing $50 store credit to a thrift shop!

No real readout on the display though I did see one comment saying it could take some time to warm up. Also no probes and the Horizontal adjust was missing a knob too.

I’m a handy guy looking to get into fixing old stereos. I know it’s not a good idea to jump into electronics and realize that some of the old stuff has capacitors that will light you up if you touch it the wrong way.

My main goal is to fix my 1960’s Electrohome that has a mean ass hum when it powers up.

All of this to say Imna skip the alluring paper weight from the thrift shop.

5
Bendix•

Can you haggle the price? Tell them it wont work well without that knob and they won't know the difference

3
bobkonysh•

What is your goal with this?

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Did it have any probes with it?

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First plug in and turn on and see if the CRT comes on. Might have to turn the intensity up. Might take some time to heat up.

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If you can get a probe and attach it to the yellow banana plug you can see if the test signal shows up.

3
yes_m8•

It would be best to get an oscilloscope on that bad boy.

2
IronyingBored•

I'm not sure. You could watch this guy's video to make up your mind.

https://www.youtube.com/watch?v=HqsXe3IKTCo

1
thisiswork1018•

Just bring a signal generator and hook it up... should be easy enough

1
_pigpen_•

If the scope has the gain turned up, the human body is a pretty good source of 60Hz.

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[deleted]•

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1
IKOsk•

Damn that looks like new...except the knob

1