Re: APC BR550GI Pro UPS not charging battery



Dear All,

My UPC is a APC Back-UPS Pro 550 BR550GI to 640-1172A-Z_REV05. Same problem, no charging. I replaced the following: IC2 - TNY278PN, 22 uF/400V on the raised board 2 x 330μF /35V and it still doesn't work. Is there anything else related to the charging circuit breaking down?

Thank you...