espio 928 error message h3

my espio 928 recently had a fall .the back was damaged and i replaced it but i am getting an h3 error message. any ideas? a costly repair?.any good news out there.

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Have a look at the Pentax UK FAQ section - an H code is a shutter fault and repairs (£25, £50 and £75) - yours should cost £50 less any discount you may be entitled to if you are a club member.