Cleaning the heads is easy with a DV tape head cleaner, it runs through the system and cleans it correctly without damaging the unit. You can run it through again to make sure, but these can be purchased from online (MINI DV tape head cleaner).Now the reset reverting back to :-:—:—:— , this seems to have lost its parameters, so the internal cmos battery or capacitor that keeps the settings and date and time, usually when you are able to put a new camera battery you can set the date and time this should then be ok. But I have experience many years ago with MINI DV, and converting them over to digital strorage , the heads would only need cleaning for the amount of time and tape ran through the system, the environment dirt the unit picks up also, so you would see your video but would play with instability and lines across the screen, or moving rapidly and giving a poor picture on display. 11 tapes to run through either 90 mins , 60 mins each is a long time so it could be heat related (possibly) as it’s an old...

This is Bluetooth 5.3 that operates on 2.4Ghz frequency the range is 240m in theory, however this doesn’t take into account that everyone’s surroundings is different. I would use a Bluetooth repeater , I would look for a standard Bluetooth 5.3 repeater and use this as you are repeating point to another point ( hence extending the signal further). Bluetooth requirements for mouse and keyboard is standard bluetooth. Hope this helps

I followed what you said , very tight was this , but still is as now it’s Brocken the white plastic centre, there is 2 underneath the dome and now 1 has snapped.

So this process is not very good. I am left with a true broken elite 2 controler. Thanks