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HP 21 not powering on - repair/troubleshooting advice
01-27-2021, 03:31 AM
Post: #3
RE: HP 21 not powering on - repair/troubleshooting advice
Thanks for the reply.

I'm aware of not powering them without a decent rechargeable battery and blowing the ACT chip and have only used a known working modified battery pack with regular AA batteries.

The battery contacts are in various stages from good to poor across the 3 units. I can see the metal ring/washer that protrudes and they look ok on at least 2 of them. I haven't used anything abrasive on them as yet but guess I will try that next and then look into your next step.

I guess I can check continuity once I open it up to see if that is the problem or connect batteries at that point and see.

As the screens don't come on I'm hoping it's something simpler than a blown ACT chip.

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RE: HP 21 not powering on - repair/troubleshooting advice - dmh - 01-27-2021 03:31 AM



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