I have a Phillips receiver (2700 model) and am experiencing some problems. My HBO, CNN, TBS, ESPN, and XXX channels have stopped working since April 5th afternoon. All other channels are working fine. I have signal with 119 and 61.5. I am using current keys but the problem still persists. If anyone has any suggestions as to how I can solve this problem (AKA LK), please respond as soon as possible. Thank you in advance.