I'd guess that either the intake seacock isn't open or you have a blockage in the intake line. The owners manual, which you can download from here: http://raritaneng.com/wp-content/upl...ket-Manual.pdf
may be of some help.
introduced the Cricket in the late 90s or early 2000s...it wasn't one of their best ideas--not because there was anything wrong with it, but because too many people didn't flush it completely (stopped pumping as soon as the bowl was empty), leaving solids and TP to build up in the diaphragm
discharge pump, which is located directly below the bowl. When it builds up enough, something has to give and that "something" was the flapper valve in the bottom of the bowl...it was not a pretty sight! After several attempts to re-design a "user proof" flapper valve, they gave up and discontinued it after only a few years.
So yes, I definitely think it's time for new toilet...and I'm gonna recommend another Raritan
. They're known for top quality toilets...the Cricket was RARE failure.
The Raritan PHII has been the top rated toilet in its class for more than 30 years...the newest version is PH SuperFlush, currently only available from Defender and for a great price! raritan ph superflush @ Defender