Tuesday 30 November 2010

Apple company Story.




" I hope you will be as lucky as I am.The world needs inventors-great ones.You can be one.If you live what you do and willing to do what it takes,it's with in your reach.
And it will be worth every minute you spend alone at night,thinking about what it is you want to design or build. It will be worth it,I promise". This is how steve wozniak concludes his auto biography 'iwoz'.
This final paragraph of his book always motivates and ignites me.People like him had changed the way other people live.I call these people as 'real leaders'.
Let me give some interesting things of this gentleman.
In childhood he was a briliant student and suffered from identity crisis.He was not
only a briliant also a naughty boy.
In 1975 steve wozniak decided to build a personel computer for a 'bit of fun'-he called it
apple.It is astonishing to realize that just after 30 years that bit of fun became a huge
reality of billion dollar worth company.More than 30 million people use apple computer
products.
Life starts like that.An atom of sperm grows into a human.A small line starts and may end up
as huge novel.Life is like a patch of land where anything can take birth and anything can grow.
Being a software proffessional, it gives me a great happyness to involve in artistic activity.
At this point you may guess what I a trying to express.Whenever we engage ourslves in the
activity we love; it can recharge our body and soul.I strongly opine that our society is becoming dry day by day.
People are getting more and more intravert.Moreover most of youngsters are burnt out.
Agony of our frustration had breached our lives.Consumerism had already consumed our brains'
logics.Our saturdays and sundays are getting wasted in north Indian restaurents,shopping malls
and multiplexes.Really, these things makes us frustrated and unsatisfied.
what do you say?.'yes'.
Thanks!

Monday 29 November 2010

Opto-coupler Tutorial...how it works?have a look.

Most of us simply change opto-coupler if the power supply is having the stand-by problem.
Let us look at this video to understand how it works.

happy learning.

Sunday 28 November 2010

Dry solder problem in circuit boards


Most of the problems in any circuit is due to dry soldering. 4 out of 10 cases I attend is due to dry solder.before attending any repair work on the circuit boards please thoroughly observe the circuit in bright light. if any doubt in the joints please re-solder the points with flux and the lead.
you can use a magnifier for the observation.
Most of the times after spending money and time for components I have found that problem was due to dry joins in the board.
So please give a deep look at the back side of the board before starting the actual work.
happy learning.

about SR2M diode...


In some TVs like Onida and Samsung, provide safety to the horizontal out put section by putting a
zener diode popularly known as SR2M. The appearance of the diode is as same as normal diode but the name will be as sr2m. In case Tv having dead problem just check SR2M diode near horizontal output transistor. If it is shorted remove and check the horizantal output transistor if it is OK, remove horizantal output transistor and check for the out put of power supply if it is normal then replace with new sr2m and switch on the set.This SR2M is like a zener diode.

If higher voltage comes it will regulate, if exceeds it gets shorted and protects HOT section.

Saturday 27 November 2010

Transistor checking

Tuner problem got solved ...!




I had a TV for repair.The problem is "frequently the picture gets very much distartion, and if we shake the cable pin socket it gets corrected.Customer wanted to get rid of that problem, because problem got severe recently.
So I just brought the TV to my service centre and told my assistant to remve the back cover after cleaning the TV board with vacume cleaner, I just inspected for any dry-solder with the tuner pins. for safety I just re-soldered dry points.

On careful observation, the inside pin socket of the Tuner was very shaky.
So just I removed the side shield of the tuner and checked for the dry joints.
I found one dry joint, which is nothing but main signal pin.I did re-soldered the point.
Tv started working properly.
Happy learning.

Friday 26 November 2010

My journey with e-care electronics





When I was doing my diploma just for time pass I joined a TV short term course in TV servicing.
There I got 'infected' with the interested of electronics. Then I made a hobby to bring books related to electronics and started learning most of the advanced technologies.
I worked as a free lancer more than 10 years and last year I started my "e-care" after the success in that I started another branch.
Now I have 4 staffs with me. Thank god I got very good work mates.
My theory in for success is to
Read the customers and behave with them.
Thanks for reading

Color patches in on TV screen.



Due to problem in the PTC in the degaussing section of TV, the screen gets color patches.
Keeping speaker and other magnet containing things also create color patches on the TV screen.
The only remedy to solve the problem is to replace the old PTC with good quality new PTC.
There are two pin and three pin type of PTCs.
Better is to replace with same Kind.
Some time due to shorted PTC it will make the fuse to blow off. To confirm the problem just disconnect the PTC connector from the board and switch on the TV.
Keep learning...

A very useful website for electronics


For useful sources in electronics subjects please visit

My friend's blog


For use full information please my kenyan friend Kimathi's Blog.

How to solve TV defocused video problem...?



Some times TV will have a problem of dull and defocused images...most of the times the picture tube base connector will be having problem.Best cure is to simply change the connector.

If the problem appears after replacing the LOT, please make a correct alignment to the focus control of the LOT.