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From: N_Cook on 11 Nov 2009 07:57
Owner put 9V on the 3.3V input, is there much chance of being VTS + fuse
protection or rescuable similar or all active kaput?


From: N_Cook on 11 Nov 2009 10:24
N_Cook <diverse(a)tcp.co.uk> wrote in message
news:hdecff$i7j$1(a)news.eternal-september.org...
> Owner put 9V on the 3.3V input, is there much chance of being VTS + fuse
> protection or rescuable similar or all active kaput?
>
>

3V input

7 presumably fuses found, 1.8 x 0.8mm with black letters over a white
central square
F001,S
F101 K
F102 S
103 N
104 N
105 S
106 K

104 and 106 are open,
so do the letters mean as Schurter SM fuse letter codes
0.375 Amp E
0.5 Amp F
0.75 Amp G
1 Amp H
1.25 Amp J
1.5 Amp K
2 Amp N
2.5 Amp O
3 Amp P
4 Amp S

I suppose temporarily replace with whatever of that rating and power up on
1V initially and see what happens on draw current then replace properly if
no other problem



--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



From: N_Cook on 12 Nov 2009 03:36
At least 3 types of ZIF Kapton Polyimide ? ribbon sockets . 2 types I've
come across but the CCD one is ground planed stripline form of 34 conductors
with staggered interlaced lands at the socket so 2 lines of 17 on one side.
At the time I thought there was a moveable closure but further inspection
I'm not sure. Came out with some retaining force so not ZIF perhaps but not
fully clamped like usual ZIF ones when locked in. Under microscope it ooks
like individual pressure wedge tongues for closure force, is it a matter of
usual reinforcement with some cloth tape wrapped around ribbon and then
forcing back in ?


From: N_Cook on 12 Nov 2009 12:40
N_Cook <diverse(a)tcp.co.uk> wrote in message
news:hdghi0$lb7$1(a)news.eternal-september.org...
> At least 3 types of ZIF Kapton Polyimide ? ribbon sockets . 2 types I've
> come across but the CCD one is ground planed stripline form of 34
conductors
> with staggered interlaced lands at the socket so 2 lines of 17 on one
side.
> At the time I thought there was a moveable closure but further inspection
> I'm not sure. Came out with some retaining force so not ZIF perhaps but
not
> fully clamped like usual ZIF ones when locked in. Under microscope it ooks
> like individual pressure wedge tongues for closure force, is it a matter
of
> usual reinforcement with some cloth tape wrapped around ribbon and then
> forcing back in ?
>
>

Getting a white LED light into the slot and veiwing with a microscope, there
are 2 sets of curved brass contacts, I could not see the recessed set of 17
before, so low force rather than zero force. the fingers are just alignment
I think . Will make some sort of alignment jig, to keep ribbon parallel
either to top of connector or the pcb, before replacing that one .


From: N_Cook on 17 Nov 2009 07:21
Anyone know the likely current drain from 3V battery for a digital camera?
Replaced as 1.5A and 2A fuses and taken BAT+ up to 1.8V, 1.5A supply and no
signs of life.
F001 , rated S so perhaps 4 amp rating is the overall supply fuse, not blown
previously so presumably I could try up to 4 amp. I assume its now a matter
of finding a crowbar device somewhere connected to the 2 previous blown
fuses . At least a diode in line with the bat+ line but not traced on
visible surface of boards


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