I've got a 45 CT 1 flash but I don't see an option for that and was hoping you could advise me. My metz makes he familiar high pitched sound when switched on, however the small red light doesn't switch on and it's not flashing when I hit the test button. I bought this flash second hand in good condition about a month ago and the flash seemed to synch ok then when I tested it. Any suggestions?
I had that same problem also, but mines was temporarly. Ik think the condensor inside the Metz has to regeneratie (recover) itself by using with a full charged fresh batteries. The high freq. sound is normal. (although not to loud) after a 5 MINUTES the orange bulb should light up. How more u used how better the start-up time. My old Metz start-up time was around 40 sec. and now ot is within 7 sec.
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I have a lot of old 45-40 Series Metz 45 NiCd battery packs, that I will eventually rebuild with new NiCd batteries. I got them from Photographic Trader magazine and from ebay. I've heard that NiCd cells are going out of production, in favour of NiMH cells. I've found it's easier to put NiCd or NiMH cells in the alkaline battery holder, the flash recycle time is only slightly longer. I charge them separately out of the holder, or in the holder with a connector I made. NiMH cells need a suitable charger, with peak detection, as NiMH cells don't like being overcharged.
During the flash impulse the "photocell", actually a phototransistor, charges a capacitor with current, proportional to the reflected light intensity. As soon as the voltage on that capacitor reaches the trigger voltage of a four-layer diode (which, in fact, is playing a role of a PUT) that turns on and triggers the quench thyristor. There is a trimmer potentiometer in the four-layer diode circuitry, which sets the trigger voltage. You can try to fiddling with that. But the culprit of the misalignment easily can be in any of the parts in the above described circuitry.
Check the polarity of the batteries. With the batteries removed you will be able to see small + and - alongside each of the six connectors. Make sure the + of the battery connects with the + connector. Similarly check the - connections. With the batteries inserted (but without the plastic cap being fitted) you should see the ends of the batteries. Three positive ends (all in a row) and three negative ends. If one, or more, has been inserted with the polarity reversed it will stop the flash from working. It can also cause the handle to overheat.
Metz in Germany advises Models CT45-1 with Serial No's 53400 or less have High Voltage triggers and must not be used on NIKON Digital Cameras Models D70 ,D80, D90 etc.and will damage Flash and even Cameras. according to a email received today. 21/09/2009 Models CT45-4 and 45CL -4 ore ok.
I have a circuit diagram for the 45CT-5 and the flash unit as well. The voltage is 360V DC, which goes straight across the flash tube. The top pin is positive, when the notch in the socket is on the right hand side, i.e. towards the back of the flash.
I'm also looking for a circuit diagram for a 45CL-4, if you know anyone who has one.
The trigger voltage of the 45CL-1 is about 12V, so it should be safe to connect directly to the hot shoe with an adaptor, or to the pc soclet, if the D90 has one. If the D90 is anything like my Canon 40D, which can stand about 30V on the hot shoe, then all the 45CL series will be ok, as they have trigger voltages between 9V and 12V. The 45CT-5 has a trigger voltage of 15V and works well on the 40D. I use 3 different Metz 45 models with my 40D and all work well on automatic, where the flash sensor itself controls the light output.
Originally the 45CT1 had high trigger voltage. In the production period Metz improved it to a much lower voltage release circuit. Metz homepage (metz.de) holds the information, from which serial number on have 45-CT1s low trigger voltage. However, even the high trigger voltage was lower than 200 volts, thus safe for your Fuji. Laszlo