J
Jeff
- Jan 1, 1970
- 0
Hi,
I am trying to repair my camcorder (sony TRV-17) which dropped into
water for several minutes. Until now everything I've done seems right
except one silly big mistake.
I once repaired some electronics instruments and in recent years I
design high speed analog and digital circuits, I also have drawn some
tricky PCBs successfully. But I never disassembled a delicate MiniDV,
so I wanted to consult some professionals first. After the accident,
the next day I went to the local offical sony repair shop. The manager
gave me some useful advices, but one of them was just curious to me.
He said I should paint a layer of oil on the PCB as soon as possible
to prevent oxidation erodes the traces and pins of chips. That day I
disassembled the cam and still found curious about the idea of oil.
The second day I want to the shop again to ensure the idea. The
manager told me the lake water was not very pure, so oxidation was
inevitable. The only way was a thin layer of oil to isolate oxygen to
act with the contamination. I should process all the pcb patiently to
prevent erosion in the future.
I followed the procedure to oil all the pcb. After posted questions on
this newsgroup I thought the thoroughly dry PCB was more reasonable.
The oil layer was just to prevent water evaporate. So, I clean the oil
and bake the PCB in the oven for one day. Becaues I oil PCBs and clean
them in such a hurry, I careless contaminated the transparent
colorless filter attached to a sqare black plastic base on top of CCD.
I tried to solve the contamination, to make things worse, the filter
dropped off. Then I did know the lens are very delicate, but don't
take care too much to CCD just to think it is a special kind of chip
making light-electrical signal conversion.
Now I am really regret the silly mistake I had done. I should spend
several days to post question and search relative thread in
newsgroups. Now I have learned some about CCD, but still don't what
damage to CCD in my situation. In my previous post, I have learned a
lot from the replies, especially from Jeff Liebermann. Thank all of
you.
Now my question is:
..What is the function of the filter?
..What damage to the CCD now?
BTW, my camera dropped to water with my cam at the same time. After
cleaning and drying, the camera works again. This gives some
inspiration to repaire my cam. I find the damage was mainly at the
power supplier part(one resistor and one fuse blown out).
Could you help me?
Any reply is appreciated.
I am trying to repair my camcorder (sony TRV-17) which dropped into
water for several minutes. Until now everything I've done seems right
except one silly big mistake.
I once repaired some electronics instruments and in recent years I
design high speed analog and digital circuits, I also have drawn some
tricky PCBs successfully. But I never disassembled a delicate MiniDV,
so I wanted to consult some professionals first. After the accident,
the next day I went to the local offical sony repair shop. The manager
gave me some useful advices, but one of them was just curious to me.
He said I should paint a layer of oil on the PCB as soon as possible
to prevent oxidation erodes the traces and pins of chips. That day I
disassembled the cam and still found curious about the idea of oil.
The second day I want to the shop again to ensure the idea. The
manager told me the lake water was not very pure, so oxidation was
inevitable. The only way was a thin layer of oil to isolate oxygen to
act with the contamination. I should process all the pcb patiently to
prevent erosion in the future.
I followed the procedure to oil all the pcb. After posted questions on
this newsgroup I thought the thoroughly dry PCB was more reasonable.
The oil layer was just to prevent water evaporate. So, I clean the oil
and bake the PCB in the oven for one day. Becaues I oil PCBs and clean
them in such a hurry, I careless contaminated the transparent
colorless filter attached to a sqare black plastic base on top of CCD.
I tried to solve the contamination, to make things worse, the filter
dropped off. Then I did know the lens are very delicate, but don't
take care too much to CCD just to think it is a special kind of chip
making light-electrical signal conversion.
Now I am really regret the silly mistake I had done. I should spend
several days to post question and search relative thread in
newsgroups. Now I have learned some about CCD, but still don't what
damage to CCD in my situation. In my previous post, I have learned a
lot from the replies, especially from Jeff Liebermann. Thank all of
you.
Now my question is:
..What is the function of the filter?
..What damage to the CCD now?
BTW, my camera dropped to water with my cam at the same time. After
cleaning and drying, the camera works again. This gives some
inspiration to repaire my cam. I find the damage was mainly at the
power supplier part(one resistor and one fuse blown out).
Could you help me?
Any reply is appreciated.
