A repair of this Tennismatic T1000 remote control was way more interesting than I expected. https://ift.tt/CL7MoIR Forum: https://ift.tt/O5eYVpn 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 continuity test 07:25 - Pro Tip: Using multimeter as a shorting lead. Testing the microcontroller. 09:27 - Is it the membrane connector? 10:17 - What would take out the entire keypad? 12:10 - Closer inspection of the contacts 12:44 - Ah Ha! What's this? 13:48 - Inspecting and testing the row membrane connections 15:01 - Conductive silver ink time 16:41 - The culprit identified 18:48 - Let's try some fresh conductive silver paint 21:36 - DAMN IT! Dave goofs. 22:56 - How conductive silver ink/paint works 24:01 - Measurements after curing 26:01 - Winner Winner Chicken Dinner Web Site: http://www.eevblog.com Hardware Store: https://eevblog.store/ Merch Store: https://ift.tt/TIqF0ly If you find my videos useful you may consider supporting the EEVblog on Patreon: https://ift.tt/ncjuX4S Other channels: EEVblog2: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover #ElectronicsCreators #Repair #Tennis
source https://www.youtube.com/watch?v=BSqKN2AaGqI
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