HuubL
hunter-gatherer
A few weeks ago I got a second hand v35 enlarger. Beautiful machine. After testing everything seemed to work excellently. Today I finished setting up my dark room and installed the enlarger. First time I switched the lamp on, everything still worked great. tested the autofocus, brilliant! The lamp was on for a total of not more than 5 minutes. One hour later, ... switched the lamp on again, ... nothing. Checked the wall outlet, OK. Put a new lamp in, nothing! Checked the current at the leads on the lamp house, no current! Fuse, OK. Opened the base unit, checked that the switch delivered current, OK. Transformer got current, but nothing came out at the 12 V end! Does this mean that the transformer is broken??? After many years of use, exactly at the time I finished installing a new dark room, the transformer blows??? I feel miserable...!!! Are these transformers still available? Or should I get a replacement transformer? What specifications?Anybody has any suggestions???
Thanks in advance.
FrozenInTime
Well-known
I was going to lift mine of the base board to have a look how it was wired, but found this site which has some nice pictures : http://www.bonavolta.ch/hobby/en/photo/v35.htm#Wiring
The wiring is as simple as it can be and there are no clever electronics in there.
( Just incase you decide to sue me: firstly unplug from the mains - i.e. nothing to be plugged into the base unit. )
If you have a ohm meter, I get 27 ohms across the primary and less than 1 across the secondary/bulb.
Looks like a unremarkable transformer - you could get a spare from farnell.com or RSWWW.com. Yours could also be rewound if you found someone or had the patience.
If that fails - the website also shows how to wire up an external AC or DC 12V >6.25A supply.
The wiring is as simple as it can be and there are no clever electronics in there.
( Just incase you decide to sue me: firstly unplug from the mains - i.e. nothing to be plugged into the base unit. )
If you have a ohm meter, I get 27 ohms across the primary and less than 1 across the secondary/bulb.
Looks like a unremarkable transformer - you could get a spare from farnell.com or RSWWW.com. Yours could also be rewound if you found someone or had the patience.
If that fails - the website also shows how to wire up an external AC or DC 12V >6.25A supply.
HuubL
hunter-gatherer
Thanks for the info. It problem appeared to be some burned wires and contacts near the lamp. With the helpful suggestions of a couple of folks over at the Leica (film) forum I fixed it and the enlarger works perfectly now.