TRIP-LITE GOOD PRODUCT BUT VERY POOR & EXTREMELY COSTLY PRODUCT SUPPORT

We recently received a Tripp-Lite APSINT2424 inverter for repair from one of our clients. Although we generally can find our way around any electronic device and repair it we searched on Google for a repair manual for this device. During the search we came across an approved Tripp-Lite distributor website being BT SA and via the website email contact page we requested a repair manual or internal wiring diagram. We received an email reply from BT SA stating that Tripp-Lite do not provide them with repair manuals or wiring diagrams and that they do not repair the units but replace the whole main board at the cost of a new inverter. I received a response from Tripplite international client service when I contacted them via their website where they requested the units serial number which I forwarded thereafter no reply ever again. I forwarded the BT SA email to them as well but no response at all. TAKING THE ABOVE INTO ACCOUNT IT IS CLEAR THAT TRIPP-LITE PROVIDE A QUALITY PRODUCT BUT NO AFTER SALE TECHNICAL SUPPORT ESPECIALLY WHEN OUT OF GUARANTEE. WE CAN REPAIR THIS UNIT FOR LESS THAN R500-00 WHICH IS WAY LESS THAN THE R5800-00 BT SA QUOTED FOR THE BOARD BUT NEED THE REPAIR MANUAL AND WIRING DIAGRAM TO TRACE WHERE THE FAULT ORIGINATED BUT TRIPP-LITE WILL NOT HAVE IT HAPPEN. WHAT A SHAME THAT SUCH A GOOD PRODUCT HAS TO BE PULLED DOWN BY EXTREMELY POOR PRODUCT TECHNICAL SUPPORT.