Dana Simmons is a professional audio engineer and technology consultant and dabbles in instrument invention, synthesizer construction and other experimental music and technology related projects. Here he rambles about his recent projects and such.
Sunday, May 25, 2008
Phillips Scope Repair
I finally decided it was time to buy an oscilloscope. I ran across a Phillips PM3217 on ebay for what seemed to be a good price, the seller couldn't test the thing because "he didn't have any probes", so it was offered as is. The two traces were confirmed to at least display and move about, "what could possibly be wrong with the thing", I thought. So I get it in the mail and the first bad sign is a notable rustle of what sounds like something broken. I open the shipping box and the front cover, which is supposed to protect the front panel controls, has been shattered into many plastic pieces. Also, the distinct smell of burnt electrolyte fills the air.
Long story shortened, There was a blown capacitor on the power supply and the trace could only be displayed in the bottom third of the CRT screen. *sigh* Lessons hard learned: Taking risks on eBay is rarely worth it.
Subscribe to:
Post Comments (Atom)
2 comments:
I love the smell of burnt electrolyte in the morning. Sorry to hear about that, it really sucks.
If you find any cool electronic projects involving music effects., please post them up. I've been keen to do one for ages now, but would prefer one which has a small setup cost.
later,
Brian
I have several small projects I've been meaning to tackle. Since I've got a little extra time now I may just dig in and start soldering, I'll be sure to take notes and pictures and post as I go. Thanks for the interest and would love to see what sort of stuff you've got in mind.
Post a Comment