As severach said, those are the used caps (Sanyo) taken from old motherboards (socket 478&462) and suprisingly had esr within spec! But then again, some 20 years old caps I posses also had it!
Thanks!
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Moustahil
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Last Activity: 09-06-2014, 10:42 AM
Joined: 06-21-2011
Location: Zagreb
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Re: Blue ESR Meter assembly problem
As severach said, those are the used caps (Sanyo) taken from old motherboards (socket 478&462) and suprisingly had esr within spec! But then again, some 20 years old caps I posses also had it!
Thanks!...
Last edited by Moustahil; 07-27-2012, 02:51 PM. -
Re: Blue ESR Meter assembly problem
Finally assembled unit and diagram......Leave a comment:
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Re: Blue ESR Meter assembly problem
IT WORKS!!!
I have checked pin 5 on IC2, +5V as you say it should be, mounted IC's, and that's it! Thanks Bob for clearing that up and selldoor for spotting a cap!
Tomorrow I will upload a photo of it!
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Re: Blue ESR Meter assembly problem
Great observation selldoor, thanks! Capacitor on the top left side indeed had wrong orientation. I corrected that, but nothing shows up on LED display yet. The small cap is fine, it's a + sign underneath actually, and the big one is bipolar!
Diagram I used is slightly different, I will post it!Leave a comment:
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Re: Blue ESR Meter assembly problem
It is very confusing since on some pictures it might look like there's solder on board, but it's only light reflection from flux!Leave a comment:
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Re: Blue ESR Meter assembly problem
Ok, so here are the pictures......Leave a comment:
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Re: Blue ESR Meter assembly problem
Unfortunately, the battery is fine!Leave a comment:
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Blue ESR Meter assembly problem
Hi everybody!
Yesterday I assembled my blue esr meter according to the instructions and stumbled upon initial checks section (with only integrated circuits left to install), precisely: "Set both VR1 and VR2 to their mid-range positions and connect a 9V supply to the battery connection. Press the pushbutton. You should see something on the 7-segment LED displays, hopefully “-” on the left hand one.".
Well, my meter doesn't show any signs of life and I couldn't locate any soldering mistakes or wrong placement of components. What to do next? I will provide...
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