Thomson ICC 20 not working

[Ordzo]

Hi i have a Thomson 32EX450 and it can't start.
It gets the high voltage from the horizontal output, but the TV dies as soon as it gets there. It tries to start 3 times and then it shows error 27 which is Deflection detects >3 times prot. I have no clue what is wrong can you help me?

Thanks in advance.

p.s. Excuse my grammar, english is not my first language.

[Pentode]

I would start by checking for bad solder connections around the Frame/Vertical output stage.

If you have the circuit diagram you could try disconnecting the relevant protection line... but you must switch off as soon as the screen comes up you don't want to be leaving it with a bright white line too long.

As you can appreciate, any problems with this stage will cause a bright horizontal line to appear which could leave a nasty burn mark inside the screen if left too long in this condition, to prevent this damage the set shuts down.

Dave