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Post by Dave oz on Aug 20, 2016 15:51:47 GMT -8
Greetings from a new member, hello everyone . Just built a cheap oscilloscope from a kit , powered on and the screen lights up but there is no signal displayed .The program didn't boot or I cant see it on the screen . One of the pins on the screen connection was way out of alignment ...had to bend it sideways so it would fit (could this be the fault I wonder) . If anyone has any suggestions , they would be well received .Cheers Dave.
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Post by lamazoid on Aug 20, 2016 21:59:24 GMT -8
need more info... there are no people with extrasensoric powers  |
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Post by volkswagenvan on Aug 21, 2016 16:53:28 GMT -8
Cheep kit found on ebay is DSO138.
Around $18.00 in kit or $29.00 assembled.
Am I close?
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Post by jbuzert on Aug 21, 2016 18:10:28 GMT -8
sounds like it could be a lot of different things. there is a high chance the bent pin is not the problem
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dave
Junior Member
Posts: 56 
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Post by dave on Aug 22, 2016 1:36:46 GMT -8
thanks guys , yeah I was just wondering if any one had any idea what this could be .cheap is right ....would have been cool if it had worked.so into the too hardsky basket for now .just got Gary's detector kit and coil ( craftsmanship is excellent on the coil ) but I'm waiting on a new iron before I start building it .anyway not sure about diagnosing this one so ill think on it for a year or so .thanks guys.....Dave
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Post by Gary Lecomte on Aug 22, 2016 7:35:39 GMT -8
Greetings from a new member, hello everyone . Just built a cheap oscilloscope from a kit , powered on and the screen lights up but there is no signal displayed .The program didn't boot or I cant see it on the screen . One of the pins on the screen connection was way out of alignment ...had to bend it sideways so it would fit (could this be the fault I wonder) . If anyone has any suggestions , they would be well received .Cheers Dave. Seems Strange they would make an Error Like that without fixing it. Most sellers have Feedback from other buyers. And if that were an issue, it would be BAD Feedback for others to see. |
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Post by volkswagenvan on Aug 22, 2016 8:16:51 GMT -8
Try to contact the seller. This may be a common problem.
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Post by Gary Lecomte on Aug 22, 2016 13:47:22 GMT -8
Dave, Do you have a LINK to the sellers Ad?
Compare your board to his Picture.
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dave
Junior Member
Posts: 56
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Post by dave on Aug 22, 2016 16:00:56 GMT -8
thanks guys, the pics of this kit are not the best but the only thing that stands out is the pin which could be shorting with the adjacent pin (it seems melted into its base quite near the next pin ) .manufacturing fault ? I will change out the assembly and see what happens . another thing is that the program may not have been loaded. I'm not too bothered by this not working it was just for fun anyway,these kits are not guaranteed to work when powered on. i did however check the values of all the components except ic's before assembly.so it's probably something I have done wrong.!
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Post by Radioman on Aug 24, 2016 19:07:06 GMT -8
dave, If you are referring to the DSO130 oscilloscope kit, I have built this kit and it works fine so far notwithstanding its limitations. Initially, I had a similar problem as yours and found that one of the solder joints on the multi-pin connector to the screen was bad even though it looked good. Perhaps reapplying your soldering iron to all the joints might solve the problem. The manufacturer of the DSO138 maintains a website and troubleshooting blog at www.jyetech.com/Products/LcdScope/e138.phpNote that JYE reports that it there are counterfeit DSO138 kits being marketed - hopefully you did not acquire one of those. |
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