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A repair of this Tennismatic T1000 remote control was way more interesting than I expected. https://tennismatic.com/main/page_products_ball_machines_t100_series.html Forum: https://www.eevblog.com/forum/blog/eevblog-1702-a-most-interesting-repair/ 00:00 – Tennismatic 1000 Tennis ball machine remote control 00:53 – Battery snap ohms measurement 01:17 – Battery current measurement 02:29 – It’s a row/column thing 02:57 – Teardown 05:20 – Membrane inspection 06:44 – Membrane keypad …