iPad A1474 not charging
iPad model A1474 is not charging. Cables and charging block have been verified, have verified that the charging connection is clean. Applying some pressure (not consistently in any particular direction) will at times bring up the charging icon, the battery will show with a red bar at the bottom, will flash 3 times, then nothing. Currently not enough power to boot up. I did the 'warming/heating' procedure which did result in a start-up that showed 9% battery but displayed 'not charging' message.
Is it possible that it is just the battery that is so far gone? I would have expected that as long being plugged in, power would be available to boot up and operate the iPAD.
Is there a known issue with failure of the plug-in component?
Appreciate direction on solving...