Hi, I only just found this sub and never really post on reddit, but I'm really stumped. So this cordless phone is specifically the handset for an old AT&T 5600 model phone from the early 1990s. For some reason the handset wouldn't charge any batteries, and couldn't make a radio connection to the base. It smelled like blown electronics, so suspecting bad capacitors, I opened it up, and saw what looks some dodgy attempt at repairs or something. There was a resistor with a cut leg, and whatever this bulging, burnt component labeled CR19 is. I have no idea what it is, as I'm still really new to repairing the actual circuitry of electronics, and I can't find a service manual or diagram anywhere. The board looks like it got pretty scorched, and the inside of the back plastic cover has a bit of a toasty burn as well. When I first bought fresh battery replacements, the phone did turn on and "work" mostly fine, it just constantly said it was out of range and the battery, as stated, wouldn't charge at all. Any ideas on what this is and what I can do to get the phone working properly?