overheating mains flash?

[arjen van de merwe]

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I have a problem with mains flash. I use Bowens and MultiBlitz. Both brands work fine for one or two hours

intensive use. Then they start to give problems. The MultiBlitzes shuts off for a half hour or so and then works

again. The Bowenses start to work intermittently. When I test the next day they work fine. This may be

overheating. I live in Malawi, with a tropical climate. However I have not noticed any difference between hot and

cool seasons, the problem remains.

Is overheating mains flash common?

I tried lowering flash levels, turning off modeling lights, working in an airconditioned place if possible, using

a different style of working (slower photographing with more contemplation). I am not sure how effective these

are. Does anybody know a better solution? (Does it help to buy more expensive brands? Are certain brands better

in a tropical situation?)

[howard_m]

<p>do the existing units have built-in fans? </p>

[brucecahn]

<p>Keep extra flash tubes. They don't last as long when very hot. It would be great to have an alternate flash setup to use when yours overheats, one with fans.</p>

[arjen van de merwe]

<p>These do not have fans. I had one with a fan, but it gave out, for unknown reason..............</p>

[alec_myers]

<p>It's very common, particularly at extended runs of full power discharges. The mere fact that most mains flashes (the better ones, certainly) have fans should tell you that they can need a lot of cooling, depending on the duty cycle.<br>

Certainly your suggestions of turning off the modeling lights, lowering the power, fewer flashes, airconditioning the environment will all help.</p>

[arjen van de merwe]

<p>thanx</p>

[misterstrobe]

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<p >Arjen, I don't think your questions have been answered to the extend that you can arrive at a practical solution to your problem. If you think there is a need for more precise info tell us which models of Bowens+Multiblitz and the type light formers you use.</p>

<p >Hans</p>

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