I've removed the PPB board out.  I cannot see anything on the front that looks terrible...I have had a look on the back for dry solder joints but cant see any obvious.  Now I understand I need to check the Q1 transister...I have read from marvins guide that you set your DMM to diode, black on the metal bit and red to either outer legs.

Now I've only got a cheap-ass DMM from bunnings (projecta brand).  .The readings should be between .4 to .6?

Thanks for your support too!