Author Topic: DMM readings wrong on PCB A for CP4500

April 08, 2022, 11:51:25 PM
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florence88

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Hi there,

I am getting incorrect readings for the first stage of setup on the CP4500. On the negative pins the readings are correct, on the positive they are incorrect. Here are the readings:

V+ ->     -0.72V
V-  ->     -16V
+12V -> -0.61V
-12V  -> -12V

I've reflowed and resoldered the joints that needed them. Any help is appreciated.

April 09, 2022, 02:23:17 AM
Reply #1

florence88

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Okay my apologies, disregard that post.
It appears to be the Lindell chassis that has either stubborn or faulty card connectors. The connectors barely accept a card, and I eventually noticed that the LED would shine brighter when I was holding the card forced into the slot. My partner measured while I held it in, and I got the correct readings. Will contact Lindell about this.