It blinks red 5 times bout wont turn on
If you try turning up the screen adjustment first. If that does not clear it up you may have some board level faults on board A/video out and on board C/demux.
After pulling the right info sheet this time It is indicating the bulb's high voltage supply. You might pull the bulb and check the terminals and the sockets for corrosions and clean them up and retry the bulb. If the code remains, then the things to check are board level:
Connection CN6501 on "G" board should see 400 volts, that will be your power supply output.
Also Check Board FB1A the component IC4001 for function.
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i just replaced the bulb a month ago so that is not
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