What size capacitor is C84 on a data east cpu board for LAH and is it needed. I can not find it on the wiring schematics anywhere. I need to replace it but don't know what value it is.
It's not to any one specific IC and is just a decoupling capacitor on the power rail. It's not uncommon to have these not listed in the schematic at times. It's a .01UF ceramic decoupling capacitor to remove noise on the power line and to smooth voltage.
This will work for you:
https://www.greatplainselectronics.com/proddetail.asp?prod=CCA-0.01uF-100V-AVX
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