does anyone have the typical readings of lcd display transformer and coil readings ?
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Re: blue ring tester
Hi,
I put one of these ring testers together from the kit AnaTek offer. I tested 4 CCFL inverter transformers from a Dell Monitor.
Eacy Primary showed open ie no change (in my case). I checked resistance and all coils showed low resistance values. This indicated low Q on the primary side. Each transformer had 3 seperate primary windings.
The secondary lit up the two yellow lights for all 4 transformers tested (medium Q).
When tested out of circuit, transformers tested the same!
Despite the open readings, the transformers were functioning fine. The monitor was restored by replacing the shorted transistors. This was on a Dell E172... -
Re: blue ring tester
thanks for the info I get the same resultsComment
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Hi all,
I'd like to add a ring tester to my toolbox to test flybacks but also low frequency transformers if possible.
I found a few products online, some based on the "diodegonewild" design, others are different designs. Some are available to build DIY, others are not.
Any suggestions on a DIY one I could put together? Ideally something which would also be able to test low frequency transformers, that might be handy.
So far I found these two:
http://bobparker.net.au/Basic%20Digital%20Ringer/ (the posher version... -
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