Esab Caddy LHO 150 - missing R48 and IC2 from control board

Last Updated: Sep 22 2017 17:06, Started by welder , Aug 22 2017 21:34

#1
welder

Posted 22 August 2017 - 21:34

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Înscris: 02.04.2014

Hi. Inverter welder Caddy LHO 150. What is the R48 resistor value and type of the IC2? For IC2 i guess SG3525 (pcb pinouts), but not 100% sure. Still someone have any control board AP02 from this device or clear high resolution picture of her? I thing, the missing components in models 110 and 150 are the same.
Thanks in advance!
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#2
welder

Posted 21 September 2017 - 20:17

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IC2: SG3525.
After some researches and thinking around circuit - no doubt.

R48: 47 k.
After some calculations and experiments.

Other: Shorted power supply thyristor and blowed up one from three big leveling capacitors. Replaced.
The result: After some testing - the device started and working smoothly and properly.

Topic closed.

#3
em2006

Posted 22 September 2017 - 17:06

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Înscris: 10.02.2007

You can download the service manual here:

https://elektrotanya...f/download.html

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Esab Caddy LHO 150 - missing R48 and IC2 from control board

#1 welder Posted 22 August 2017 - 21:34

#2 welder Posted 21 September 2017 - 20:17

#3 em2006 Posted 22 September 2017 - 17:06

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#1
welder

Posted 22 August 2017 - 21:34

#2
welder

Posted 21 September 2017 - 20:17

#3
em2006

Posted 22 September 2017 - 17:06