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WESD51 Schematics and Other service information

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emrtech

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Weller WESD51 Schematics and Other service information

I needed to repair my WESD51 station recently and decided to draw out the schematic to aid in troubleshooting. I also included some oscilloscope captures around the TRIAC and line syncing interrupt input to allow comparisons.
I hope it may be useful to someone in a similar situation. Thermocouple vs ADC input voltages are also listed to correlate temperature to ADC voltages.
 

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  • WESD51_Docs_R1.zip
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