"**THE-RFI-EMI-GUY**" wrote in message
.. .
Subject: Intersil CA3162E/CA3161E A/D BCD/7Segment problem Weller
Soldering Station

Hi
I am trying to fil my Weller soldering station which has lost its
temperature readout. This particular model has the Intersil
CA3162E/CA3161E A/D and BCD/7Segment chips. When first turned on the
display flashes "EEE" and then goes blank. I shotgunned the repair by
replacing the filter caps in the power supply and though I had it fixed
but it is back to same problem.

In reading the Intersil application notes for the A/D convertor I don't
see a logical mode where EEE would be displayed
Does anyone have advice for troubleshooting this configuration?
--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

Joe -

I went to my files and found the EC3000/EC4000 Tech Sheet (I have not yet
posted this one).
This model had the slide switch between READ and SET.

It shows an ICL 7137 as the main display IC and a MOG 2374 as the control
board IC.

The resistor values on the display board are critical for proper F readings

g. beat
w9gb