Just purchased a really nice HP-35 on eBay. Received unit, installed new battery pack and hooked up to charger. Checked unit for power up and function when tied to AC and all works fine. Let batteries charge for about 8 hours, unhooked charger and tried running on battery. Unit will not turn on. Swapped charged battery pack from HP-45 and same result. I took a closer look at battery spring terminals and found one with some corrosion. Cleaned up both terminals and tried again... No luck. Looks like something has opened up in the 30 years this guys been on the job. I don't have a multimeter so can't troubleshoot further.
So, here's the question for the experts out there: Can this problem be repaired easily? I would be willing to get the calc repaired provided low probability of collateral damage to other circuit functions.
Thanks,
Mike