You need to go back to the dealer - that's clearly got several elements that have failed. Measuring the current is irrelevant really, that needs (another) new screen.
I'd give Volvo customer services a nod to see if it is a common problem?
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2011 XC90 D5 Executive
2003 C70 T5 GT
2012 Ford Ranger XL SC
1977 Triumph Spitfire 1500
1976 Massey Ferguson 135
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