Electronics Forum: intermittent leds (Page 1 of 1)

Epoxy crack causing intermittent failure

Electronics Forum | Thu Feb 22 13:11:51 EST 2001 | keithtbe

Silver epoxy is used to joint the LED beam lead and the trace of the flexi circuit. Due to the LED mounted skew upward or downward unconsistently, the strength of the joint weakened and causing the LED lights up intermittently. I would like to ask fo

Porosity in Good Plating

Electronics Forum | Mon Jul 07 00:22:38 EDT 2003 | sam

Thanks for all the answers. I should clarify that the problem was found to be on the SMT LED gold plating, instead of PCB gold plating. We had confirmed this problem by running some DOE experiments and some reliability testings. We had decided to d

YSVJ-650 led strips cutting machine

Electronics Forum | Wed May 15 05:44:04 EDT 2019 | peterchan

1、YSVJ-650B three-group multi- blades cutting machine, multiple sets of tools run at the same time, split the whole piece at one time, greatly improve production efficiency; multiple sets of tool design ensure that the split plate effect is not defor

MPM UP500 blowing power supplies

Electronics Forum | Tue Nov 29 11:45:35 EST 2016 | ttheis

I was able to repair the original power supply for the printer again with parts from another similar power supply on ebay. At first the machine didn't power up properly even though the supply voltages were all good on a volt meter when tested befor

Quad IVc Theta Axis Problem

Electronics Forum | Thu Apr 17 16:55:32 EDT 2014 | bobpan

Hello, The only thing i can think of is the x&y ribbon cables. I know you said they are good but they could have an intermittent break. I would get a spare set and plug them in with the machine at a slow speed setting and see if it works as normal. A

Quad IVC Laser align init problem

Electronics Forum | Mon Sep 24 20:34:46 EDT 2012 | saduquette

Hi All, I have a Quad 4C that the quadalign processor started acting up on. Where the Hand Held Progrmmer would hang at "Laser Align Init" when you first turn the machine on. A couple of times I was able to get it running by pressing the re

Universal Instruments Radial Inserter

Electronics Forum | Mon Jul 30 15:28:25 EDT 2007 | gmoritz

I'm posting a diary of the major repair experience that we had this weekend. I'll follow up with a shorter post that sort of summarizes a few things. ------------------------------------------------ The service guys showed up at our facility about

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