Hi DBOL17,

welcome to Questions & Answers..:smileyhappy:

DBOL17 wrote:
Following digi retune the set is now stuck recycling through the start up mode.  Swithhes on, shows SONY logo, takes about 25/30 seconds than switches off with a loud pop.

I don't like the sound of switches of with a loud pop, maybe worth contacting Sony support but I suspect a repair may be required..

Contact Sony support