2007 speedster start problem

[seedoouser]

Hi am having problem starting 2007 speedster 430 hp. had boat serviced, sea trial fin, started as normal. Boat delivered on trailer (50 miles) when key went on beeped as normal but wouldnt start. Now when key is placed on there is no beeps. Port engine makes a low buzzing noise, needles on speedo, starboard rev counter and fuel gauge flicker around halfway, when either engine starter button is pressed buzzing stops but engines do not fire and needles return to zero, after a few minutes buzzing resumes and needles flicker again. Battery appears to be ok, blower, horn, radio bilge pump operate fine.
Any help would be appreciated as am in Spain and boatyard mechanic was unable to locate fault.

 

[Dennis]

No Start

Sounds to me your boat doesn't have enough battery voltage in order to operate correctly. Check the cable connections at the battery. If they seem good then have the battery load tested in order to check its condition.
DAWG