Congrats.
I'd strongly suggest to you to join up over at the lencoheaven site (LH) that I posted a few posts up.
An L75 is a 40 year old deck, and will need some lubrication and tuneup to get the most out of it. Its all fairly straight forward, but, necessary due to age. Its all well documented at LH.
Where are you from?
People over at LH will want to know this as well, as there are some local main grid power supply issues that will need to be addressed. Its also helpful in finding other Lenco owners in your area, who could very well be helpful to you.
One thing that might need to be addressed is the stock tonearm. The tonearm has what are called v-blocks that provide the vertical lift for the arm. The stock v-blocks are typically worn out or disintegrated by now, and will likely need to be replaced. They are available from members at LH, as are quite a few other parts in the after-market.
Some people restore the stock arms, other people replace them. I don't have a lot of experience with the stock arm (I'm a replacer), but have restored one stock arm, and found it to be a nicely functioning, nice sounding arm.
To-do list:
~ Lube motor - detailed instructions with photos at LH
~ Lube main platter spindle and bearing, and idler wheel bearing
~ Clean platter underside and clean idler wheel (Does it have a metal rimmed wheel?)
Again, congrats.