My flash went out on my fav camera last year.  The repair cost was
just too much so I purchased a broken dx4530 on ebay for $18.

After getting my courge up, I "popped" open the 4330 and
replace a flash "module" with the unit found in the
4530.  Same board in both camera.  Scary.  Was just one small screw
and the module plugged in.  (I experimented "popping" open on the 4530)

Lot a stuff in there.  I'd say a half a dozen power supplies; TI DSP
tms320.
Was interesting to find the sensor was hand soldered on it's mounting
pwb.  Bats
were connected to the pwb with what I'd call 'rails'.  Some big current
in there.

Also found out why the mode wheel was flakey.  There are four gold
fingers
that ride on gold pwb traces.  I think they were bent in mfgr.  Bent
the back
down and works great!

Flash cap 335V 120 uF.

Also found a battery in there.  I assume it's in there to hold the data
in
some chip.  I guess that would mean you could reset your counter if
you wished.  I had always thought it was a flash memory setup.

I took some pictures of the 4530 gutted if anyone is interested.  Post
you email if you
dare.  This is a junk address.  But if you put DX4530 GUTTED in the
subject header
I'll send you the pics.... maybe :-)

Great to have my camera back!