[Amps] Cleaning open frame TR relay

[BILL KENNAMER]

 Even printer paper works.
K5FUV

    On Thursday, July 1, 2021, 10:48:28 AM CDT, Jeff DePolo <jd0 at broadsci.com> wrote:  
 
 > What's the best way to clean the contacts of an open-frame TR relay?
> I'm hoping to just clean the relay without disassembing the amp, but the
> contacts are a little hard to get at.

Start with something non-abrasive like a piece of cardstock.  First run it through dry, then take another clean piece of the same with a drop of IPA or contact cleaner on it.  

If that doesn't do the job, use a aontact burnishing tool.  Jonard is probably the most common.  If you need something small, the disposable type are the way to go as you can cut them into smaller/shorter pieces then grab it with a pair of needle-nose pliers, forceps, or whatever.  After the burnishing tool, run a piece of cardstock with IPA or contact cleaner through just to make sure nothing is left behind.

                    --- Jeff WN3A



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