Experiences with the RelaiXed DIY audio preamplifier

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faulty relays

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1faulty relays Empty faulty relays on Mon Apr 20, 2009 2:21 am

quoting from the "Suitable transformer" post:
josve wrote:Hi NicolaS, oj,
nice to see the first posts in our new forum!

If we are here discussing this fantastic project (and piece of equipment) is entirely your merit!

Just a technical/practical addition...please, pay attention to the short-term reliability of the PANASONIC EW TQ2-12VDC relay, since I encountered two faulty units out of 24 installed... perhaps a bad batch, but keep your eyes/ears opened...

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2faulty relays Empty Re: faulty relays on Mon Apr 20, 2009 4:34 am

I guess testing before soldering is good advice....

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3faulty relays Empty Re: faulty relays on Mon Apr 20, 2009 10:04 pm

As Nicolai pointed out, testing is the only solution to avoid a painful desoldering of a faulty relay. However, testing this particular component is a tricky task, since you have to wire it up temporarily (we are talking about tiny pins) to switch it on and you need a dedicated power circuit... actually, I desoldered the faulty ones...

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4faulty relays Empty Re: faulty relays on Mon Apr 20, 2009 11:18 pm

What was faulty? No actual shifting of poles or no "click" at all? In the latter case checking should be rather straightforward.

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5faulty relays Empty Re: faulty relays on Tue Apr 21, 2009 7:56 am

the relay was apparently clicking but no contact was formed, if I remember it correctly.

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