rear camera input not working

After receiving all possible failures from this product, a logical question arose. - So how to buy spare parts for INNOVV K1 from you (manufacturer)? After buying the battery, it turned out that one of the cameras (rear, but installed in front due to the length of the wire) also came out of standing. - How and how much does your new camera cost instead of a defective one? - Where, how and at what price to buy safety glasses for cameras? - Where, how and at what price to buy a new power supply for the camera, because the old power supply does not hold stable voltage and current, as well as poor contact at the USB A female connector due to flat tracks? Remind everyone that You can buy battery pack from GoPro for: HD Helmet Hero, HD Hero, HD Hero 2, HD Hero 960, HD Hero Naked, HD Motorsports Hero, HD Surf Hero part numbers are: ABPAK-001, AHDBT-001, AHDBT-002

Hi Rock , as per my post in the K2 forum, the K1 has been brilliant up to now, but following that post, I think I spoke to soon !! last night I went to download the footage but the unit is completely dead, won't turn on , nothing, the charging light on the side is on (faint white light) but nothing happening. I tried a reset, plugged it back into the bike, nothing, completely dead, any ideas what is wrong? thanks

So I noticed that in most cases with me the Recording stopped failure happens when I have a drop in batter voltage. Was thinking. What if an inline batter was put in place between the power source and the DVR. Think on of the USB battery packs. Now you would need one that started charging and recharging automatically but think this could solver the problem. The battery pack would simply act as a UPS. Something the onboard battery should already be doing. Also has anyone else though of installing a heat sink on the DVR or even the battery?