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Snap on 305A beep code help

pollack137

New member
Joined
Aug 21, 2024
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1
Hi, I picked up a Snap On 305A manual wheel balancer at an auction and it is currently inoperable. When power is connected (9v AC) a beep code of 2 short and 2 long beeps occurs. The three 7 segment leds or individual led's do not disply anything. The main circuit board power supply has a green Led lit on startup and the microproccesor board flashes a red led once then it works in sync with the beep code. I have checked and confirmed 5v power at all VCC terminals of main processor and led driver chips.

I have contacted Snap On and searched many times for service manuals (operator manual available but it looks like it is too old and rare to get any info on). If anyone has any service info on error codes for this or any other Snap On/John Bean balancer of this era (early 2000's), or help obtaining a service manual, I would greatly appreciate it.

Thanks, Tony
 
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