After I bought an MHL adapter it worked briefly for my S4 then lost picture, what did I do wrong?

A

AC Question

I bought an MHL adapter which worked briefly for my s4 then lost picture

On examination it appears I should have restarted my phone on first use I didn't now I just get no signal on my tv can I reset
 

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Re: I bought an MHL adapter which worked briefly for my s4 then lost picture

Welcome to Android Central! Try disconnecting everything, then rebooting the phone, then connecting again.