The fact that the TV is missing some channels or has a black picture after a network update, might have to do with the termination of MPEG2 transmissions in DVB-T and DVB-C networks.

To improve the quality and the amount of services, network operators have started to terminate MPEG2 encoded transmissions and are switching to MPEG4 encoding.
This will result in the loss of channels for MPEG4 enabled legacy models or no picture for models without MPEG4 support.

List of legacy models without MPEG4 support

 

2007 models

KDL-20G3000 KDL-20S30X0 KDL-26P3000 KDL-26P3020 KDL-26S2800 KDL-26S3000 KDL-26T2800 KDL-26T3000 KDL-26U3000 KDL-28T2600 KDL-32D2600 KDL-32D2710 KDL-32D2810 KDL-32D3000 KDL-32D3010 KDL-32P3000 KDL-32P3020 KDL-32S3000 KDL-32S3010 KDL-32T2600 KDL-32T2800 KDL-32T3000 KDL-32U3000

KDL-37P3000 KDL-37P3020 KDL-37P3030 KDL-40D2600 KDL-40D2710 KDL-40D2810 KDL-40D3000 KDL-40D3010 KDL-40D3400 KDL-40D3500 KDL-40D3550 KDL-40D3660 KDL-40P3000 KDL-40P3020 KDL-40S3000 KDL-40S3010 KDL-40U3000 KDL-40V3000 KDL-46D3000 KDL-46D3010 KDL-46D3400 KDL-46V3000

 

2008 models

KDL-40L4000
KDL-40S4000
KDL-40S4010
KDL-40U4000
KDL-40V4000
KDL-40V4210
KDL-40V4220
KDL-40V4230
KDL-40V4240
KDL-46V4000
KDL-46V4210
KDL-52V4000
KDL-52V4210

 

Has my Network changed to MPEG4?

Please contact you network operator about plans to change the encoding standard.

Can I view all programs again after the change?

If your TV is not in the above list, please retune your TV.
Some networks require a special Network ID and frequency settings.
Please contact your network operator about these settings.

If your TV is in above list, you cannot view these services anymore with the built-in tuner. Please contact your network operator about possible set-top box solutions.