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Electronics => Repair => Topic started by: BreakingOhmsLaw on April 01, 2021, 12:14:20 pm

Title: Wanted: Hameg HM8122 frequency counter EPROM image.
Post by: BreakingOhmsLaw on April 01, 2021, 12:14:20 pm
Hello,

I am restoring a HM8122 with massive overvoltage damage. A complete and utter trainwreck, nearly every chip is dead or damaged.
Does anyone have an HM8122 frequency counter and would be kind enough to read the EPROM for me?
It's socketed by default, so it just requires removing a few screws to open it up and pluck it from the PCB.
V4.1 would be great, but I guess any version will do.

Your help is appreciated!
Title: Re: Wanted: Hameg HM8122 frequency counter EPROM image.
Post by: poppniete on April 17, 2021, 05:50:34 pm
Here you go. As you can see, it is a rev. 4.1 firmware:

[attach=2]

The whole firmware fits in only 8 kB memory - amazing.

Good luck with your repair.

Regards

Jan
Title: Re: Wanted: Hameg HM8122 frequency counter EPROM image.
Post by: BreakingOhmsLaw on April 17, 2021, 07:07:58 pm
Many Thanks!
Title: Re: Wanted: Hameg HM8122 frequency counter EPROM image.
Post by: rob040 on June 02, 2021, 05:12:06 pm
Is V4.1 the latest ever used by Hameg?