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Old 11-16-2017, 04:56 PM
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maxhifi maxhifi is offline
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Wirewound Resistor Lesson

I posted another thread about counterfeit STK modules. Anyway the bad ones I got blew two 1.8 ohm 2W resistors on the convergence board of my Runco/NEC projector. I got the new modules, and I changed the resistors to 5W wirewound ceramic resistors, and suddenly all week, the projector would randomly become unstable, text would twitch and vibrate periodically, and then snap back to normal. Subtle but really annoying if you knew to look for it.

I thought OK it never did this before, what's different? Well, 2W metal film resistors fixed it.. it's totally stable now. Learn something every day, I guess!

Must have been the inductnce of the wirewound resistors messing things up.
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