CAYIN A-100t INTEGRATED AMPLIFIER

I would like to be able to troubleshoot and repair this amplifier myself. Problem is that doing anything other than a few "obvious" checks is almost impossible without a schematic. So, my question to the audiophile world is; - - -  "does anyone know or have a schematic for a CAYIN A-100t amplifier".  Trying to get something from China is near to impossible. I've tried. Also, USA TUBE AUDIO has been no help. They want big money to troubleshoot with no guarantee of the results, or whether parts are even available. They claim  that they don't even have a schematic. To make things worse, the industry rumor is that CAYIN is close to "closing their doors" forever. Can't find anyone in the Chicago area that is capable of doing a repair on this amp. I'm not going to spend a lot of money on a 10 year old + amp, with no guarantee of results. but I hate to throw it in the garbage heap.  So, please, - - - if there is anyone who can actually help, your response would be greatly appreciated..Please, no "smart assed remarks" like I tend to see in other Audiogon discussions. If you can't help, please don't respond.