D200 flash contact problem with external flash

[erictan8888]

hi,

was using the D200 with SB600.... and noticed that the SB600 will auto flash by itself for no reason....

i was not even touching the shutter release button, holding camera still and flash just went off by itself...a few times....

today not the first time liao, noticed this a couple of days back....

tried the flash on the D70, but no such problem... so i think it is not the SB600 flash problem.

anyone can share what is the problem? what is wrong?

thanks

[zac08]

Originally Posted by erictan8888 hi, was using the D200 with SB600.... and noticed that the SB600 will auto flash by itself for no reason.... i was not even touching the shutter release button, holding camera still and flash just went off by itself...a few times.... today not the first time liao, noticed this a couple of days back.... tried the flash on the D70, but no such problem... so i think it is not the SB600 flash problem. anyone can share what is the problem? what is wrong? thanks

Were you using wireless controls?

What were your settings? Never happened to me though.

[HansVision]

does the flash fire normally when u press the shutter button?

maybe ur camera hot shoe contact with the flash is not good. if that's the case, just use an eraser to rub the hot shoe contacts a bit to remove watever dirt or oxidation that is on the metal contacts.

just a suggestion though i think it might not be so simple coz usually contact problems result in flash not firing instead of anyhow firing...

[erictan8888]

not using wireless controls..... hmm..... why like that leh ?

[surge]

the flash will fire when the center contact( the largest) comes is short to the lower right pin. check see if there is anything between these 2 contacts. like water droplets, some metal stuff etc. these are the same 2 contacts on manual flash that needs to be triggered to fire the flash

[longkangman]

Originally Posted by erictan8888 i was not even touching the shutter release button, holding camera still and flash just went off by itself...a few times....

suspect that one of you cam body other than the d70 have fault.

you can use a multi-meter to measure the current on the body as describe above if there is a change/jump in current then you know is your body liao.

Time to go NSC.

[erictan8888]

hmm.... will make a visit to NSC next week and get this sorted out....
hope body is alright....

is this considered a major repair?

[espn]

Have you tried what was suggested to you above by the others?

[erictan8888]

nothing between the contacts... wipe dry liao....
tested this morning... flash also went off again....

now trying with the multimeter....

[surge]

Originally Posted by erictan8888 nothing between the contacts... wipe drop liao.... tested this morning... flash also went off again.... now trying with the multimeter....

you should try your D200 w a different flash. if don have another flash just go down to second hand shop take one and try....if fire off again means you D200 got problem liao

[longkangman]

Originally Posted by surge you should try your D200 w a different flash. if don have another flash just go down to second hand shop take one and try....if fire off again means you D200 got problem liao

it could be that the the pre-view button is being press while holding the flash.
Just double check.

[erictan8888]

tried with multimeter...

no current detected when tried with all contacts....

the multimeter probes on the hot shoe contacts...




the current reading is zero...



when tested on the 2 poles of the battery, got reading...



hmm... what's wrong leh?

[erictan8888]

Originally Posted by longkangman it could be that the the pre-view button is being press while holding the flash. Just double check.

sorry, what pre-view button you talking about? ?? blur ?



i holding body and not touching any buttons, flash also go off.... hai....
no current... no shorting... why like that leh ?

[longkangman]

Originally Posted by erictan8888 tried with multimeter... no current detected when tried with all contacts.... the multimeter probes on the hot shoe contacts... hmm... what's wrong leh?

one is open only close when push the button down.

with the battery it is closed with the way you connect.

BTW why 35.5?

[markccm]

did the flash light stay on for quite sometime?

if it did, it means u pressed the DOF button by accident.

[erictan8888]

35.5 is the reading when the multimeter tested with the battery... to prove that the multimeter is functioning...

the zero reading is the reading i get when the multimeter on the hotshoe contacts...

never touched any button on body....flash blinked....
problem.... problem.... hai....

thanks for all the help.... think need to go NSC then see how.... xian....

[wildstallion]

Originally Posted by erictan8888 tried with multimeter... no current detected when tried with all contacts.... the multimeter probes on the hot shoe contacts... the current reading is zero... when tested on the 2 poles of the battery, got reading... hmm... what's wrong leh?

Your using a more sensitive setting for the battery then you are for the hotshoe, i suggest trying again with the more sensitive setting on the hotshoe

[erictan8888]

actually tried all multimeter setting, from not sensitive to super sensitive....
picture of the multimeter happen to be taken at different settings only...

just to be doubly sure, i tried again with the multimeter on all settings... no current still...

even tested on the contacts of the SB600... also no shorting detected....

hmm.... tricky isn't it?

[longkangman]

Originally Posted by erictan8888 actually tried all multimeter setting, from not sensitive to super sensitive.... picture of the multimeter happen to be taken at different settings only... just to be doubly sure, i tried again with the multimeter on all settings... no current still... even tested on the contacts of the SB600... also no shorting detected.... hmm.... tricky isn't it?

if you turn the dial to the right/clockwise it is measure AC but battery is DC.

[Artosoft]

Originally Posted by erictan8888 tried with multimeter... no current detected when tried with all contacts.... the multimeter probes on the hot shoe contacts... the current reading is zero... when tested on the 2 poles of the battery, got reading... hmm... what's wrong leh?

Wow... You are measuring Ampere directly from the battery .

Good luck!

Regards,
Arto.