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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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HEATHKIT 10MHz Oscilloscope overheating problem.
On Monday, May 29, 2000 at 3:00:00 AM UTC-4, Matt wrote:
Hello, I have two Heathkit 10MHz scopes and they both have failed at the same spot. So I am wondering if anyone else has had this problem. The problem is on the left vertica On Monday, May 29, 2000 at 3:00:00 AM UTC-4, Matt wrote: Hello, I have two Heathkit 10MHz scopes and they both have failed at the same spot. So I am wondering if anyone else has had this problem. The problem is on the left vertical board and its down on the lower left side of the board (when you look at the component side of the board). The 10 Ohm resistor gets really hot, and eventually burns up. The display is majorly out of wack (for lack of a better term). Most controls have no effect, but it is displaying something. The model number for the scopes is: IO-4550. Thanks to anyone that is willing to help me out. If you need more info I have it. Thanks - Matt Rizzo Oakland University School of Engineering and Computer Science (SECS) Hi, I have the same scope, I put it a way working years ago and just turned it on today and it smoked. There is a burnt 10uf cap and 10ohm resistor on the vertical board in the minus 15 volt circuit. I believe the burnt components on my scope are C123 and R163-1, the cap is shorted. I will eventually try to replace the resistor and cap. D. marino |
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HEATHKIT 10MHz Oscilloscope overheating problem.
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#3
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HEATHKIT 10MHz Oscilloscope overheating problem.
On Sun, 15 Oct 2017 23:24:41 -0400, bitrex
wrote: shorted. I will eventually try to replace the resistor and cap. D. marino You're responding to a post made over 17 years ago. Holy crap Batman.......... 17 years ago, they hadn't even invented the electron yet! |
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