I've had that covergence problem for about 3-4 times already, that's a overheated or voltage fluctuated IC. We had the philips technician add two 12cm fans inside and exhaust on the set to counteract it (after getting replacement ICs of course, 6k each time...haay). We also had a dreadful ants inside the lamp problem...and a dead / hot pixel too..(buti under warranty pa yun, but the downtime was 2 months...) ...same time napalitan na rin yung mobo nito dahil sa moisture intrusion about 3 years ago.... lastly was having no picture (happened dec, then last this month)... (the transformer for the lamps were failing na... 8k naman yun)
Pero, di naman palagi nangyayari mga problems nito... mga buwanan...even yearly. Pero yung overheated ICs, di na naulit... thank god.
Ang maganda lang is that...easily fixed itong mga problems of late... (linis lang nung umpisa, tapos part replacement the next.) Nothing that would permanently disable the thing...