We offer quality products, services, training and information with emphasis to electronics and communication field through relevant information.
Saturday, October 31, 2015
Monday, October 26, 2015
CRT Television with color problem now solved
Hello Humphrey, thank you very much for responding!
No, I am not a repair man, but I've read about repairs and
troubleshooting on the internet, and I like to be thorough in my descriptions
of problems.
I thought I should
tell you there's been a new development.
With the picture on
the screen, I turned the colour completely down to see if the picture would be
perfectly black and white.
It was not, and had a
slight magenta/purple shade over it. I've read that this suggests it's a
technical problem, not a set up problem.
Also, when I was
watching a DVD on the television, there were sometimes green blurs appearing
and disappearing around the edges of the picture.
And for very brief
moments there are blue and green outlines around certain things in the picture,
but they come and go.
I read that too much red in the picture can be caused by not
enough green, and sure enough, when watching DVDs, at moments when there should
be green in the picture, there is very little if any green.
Thank you very much for supplying the picture with the
instructions to try re-soldering, it's very much appreciated and very useful!
Please can you tell me
if this would likely solve these problems?
Yours sincerely
CRT Television with intermittent colour problem question
Email from the UK
Hello, I wondered if you could help me. I really like your
website!
I have a problem with a CRT TV which I would like to repair if I can.
The picture has too much red, and sometimes too much blue or
too much green.
But the problem is intermittent - it comes and goes - there
are moments when the picture is perfect, then it has the problem again.
I am guessing that because there are moments when the
picture is perfect, it's not likely to be the colour itself that needs
adjusting, it's more likely to be a bad connection, like something that needs
re-soldering.
Please can you tell me if you have seen this problem before
and is there likely to be any chance of repairing it?
Thank you very much
Yours sincerely
James McCarty
Bedfordshire, UK
Sunday, October 4, 2015
How series bulb current limiter works
I have received a few questions on the operation of series
bulb current limiter and in this lesson I wish to shed some light on this very
old gadget and yet a favorites for both engineers and technicians around the
world.
First let me point out that the principle used to make this
gadget is very simple.
In basic
electronics we have a concept called Ohms law, as you can see from the formula
below we can conclude that ohms law basically describe the relationship between
voltage, current and resistance in an electric circuit.
To
understand this law let me use piped water analogy…Voltage is electric pressure
just like water pressure in your tap and Current is the flow of electrons just
like the flow of water from a tap and the tap can be considered as resistance.
Subscribe to:
Posts (Atom)