The INSAT-4B communication satellite has been hit by a power supply anomaly in one of its two solar panels, partially affecting some television and telecom services in the country. <br/><br/>The snag in the dedicated TV and telecommunications satellite launched by Ariane 5 rocket from French Guyana in March 2007 with an estimated mission life of 12 years has led to switching off 50 per cent of the transponder capacity. <br/><br/>The three-tonne INSAT-4B carries a total of 24 communication transponders, 12 Ku-Band and 12 C-Band.<br/><br/>Due to a power supply anomaly in one of its two solar panels, there has been a partial non-availability of services on India's INSAT-4B communication satellite. <br/><br/>Indian Space Research Organisation, ISRO said in a release in Bangalore today that on the night of July 7, the satellite experienced a power supply glitch which led to switching off 50 per cent of the transponder capacity (6 Ku and 6 C-Band transponders). <br/><br/>An expert team is studying the possibilities of partial utilisation of some of the transponders that were switched ‘off ‘and restoring services at the earliest.