Electronics Forum / Repair / October 2007

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I'm having problems with my STR-V555ES,when i turn it on i do not get
anything on the display,and the mutting led blinks for about 15
seconds,the it will stop blinking and i get the display on,now when I
move the volume control either up or down the DB numbers cout so

I'm terrible with SMD components, and was hoping that someone could offer
some advice.
I have an old 1st generation ipod which has started randomly rebooting. I've
narrowed the problem down to the logic board. It will work fine for a while

I have a customer who has 3 Infrared Remote Ceiling Fan Controllers (No Name
Brand).
The Receiver has Live and Neutral in, Fan Live Out, Light Live Out, and
Neutral Out.

What is the difference between the video output signal provided by
the
cable-out (coax) and the signal provided by the video-out (RCA)
connectors?  Thanks in advance.

My 5 yr old ProView 19 crt has assorted minor issues, including a PS
failure I had repaired 3 years ago. Recently, the image periodically
slowly dims over a few seconds, like turning the contrast full down and
reducing the brightness. Gets medium dark, but does not disappear

I'm having another problem with my 27" Zenith Sentry 2. The picture
tube only shows a narrow slit of light across the middle of the tube.
This is evidently part of thr picture it should be showing.
Occasionally the whole picture will flash on for a few seconds, bright

One of the two main fuses blows instantly as soon as power is applied
to receiver.  I checked the main power supply caps 2@10,000uf and they
were ok.  I also checked the bridge rectifier and it was ok.  When I
remove the two power leads to the transformer it does not blow fuse.

This unit was experiencing the common symptom of screen going black
after a few seconds of turn on.  Turn off and on again, problem would
repeat, but things got better with some dark splotches on successive
cycles of turning off and on until after about 2 minutes, the screen

I know this is a  long shot but what the heck.
In a pile of used and/or obsolete video equipment that was given to me
I found a 16 camera video multiplexer that is really cool and looks
brand new.  I hooked up the 2 video cameras I have and it worked fine

I have an old cie 7905A multimeter. When I measure a dc voltage it
gives me a value. If I permute the + and - leads I read another value,
some % different. I have opened the multimeter and i can see 4
potentiometers : ac, osc, cx, dc, all 200 ohm.

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I am a bit worried about the experiments of my current roommate, i know
he is a very competent engineer but he has the habit of playing with lasers.
Now he has a dvd burner laser inside a penlight housing which can reach
across the park here (and that's VERY far, but i'm worried ...

I have a 2 year old Toshiba MD13Q41 or MD20Q41 TV with DVD player that
has little or no sound on some channels and perfect sound on others.
Picture is fine on all.  Some channels have this problem all the time,
others never have it, while some have it intermittently.  When there