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[TV] Re: LCD TV's
These day is no different that the old days,we are the same person ,just
using our knowledge in a different way for example: on this case I use my senses
to find the problem,the days are gone when we just to use the scope very
frequently,many times no S/M now,if we get an S/M,is very difficult to follow I
will say now these days we become Mechanic Electronic, in some ways I am glad
because sometimes we do not use too much troubleshooting time and many times
we have to guess what is cussing the problem, that is the reason I belong to
this list,we help each other .-
I already send this problem but here goes again.-Tito
Symptom:Tv POP and picture went out,replace Z board,picture was there but
very dark and I use the old technology technic, on the Y main sustain board
there are 2 big Heat Zinc,play the TV for about 20 minutes,and after that time
feel the temperature on those 2 Heat Zinc,one will be warm,like suppose to be
and the other will be cold,like is no working,talk to tech. ass. for LG, and I
was told to replace the Y main Sustain Board they also told me that the POP
is when that IC under the cold Heat Zinc went out,may open ,got this board
from DM,1-800-281-8860 for 154.99 free S/H. If I send the old one back,they pay
me $25.00,they will pay for the S/H on this old board,How about that, there
is another place (SJ),they want $ 179.00 plus S/H for this board if they have
it.-On my case with this TV,maybe I did not need the Z board,only the Y
main,but what happen was that when I was measuring voltages around the old Z
board I made a short blow it out.- The TV now works OK,in the future I will be
more careful around that Z board,the customer has no to pay for this
board,because this TV is mine, I took it as a trade in when I sold the customer a 50"
Panasonic Plasma.- I hope this report help somebody out there, help me a lot,I
expend many hours on this,but the next one will be fast diagnosis.-.-
Tito's TV Sales and Service=CET Id.66
Saint Anthony-Idaho-83445.-
____________________________________
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In a message dated 4/3/2009 2:21:05 P.M. Mountain Standard Time,
yuming@xxxxxxxxxxxxx writes:
Yes, I agree all of this, but new technology is the effort of other more
skillful electronic scientist's R&D result. If have thier explanations would
much easier than oneself to look at the physical equipment if-self. Now All
skills are hiden inside ICs, if no theory and ICs data can not understand them
with one-self's own effort. Some theory is going to add to the circuits that
working on the equipment. Use basiv knowledge to understand it is the most
basic way to work on it. Every TV repair job, if have original service manual
would be much easier to work on it. Although after fixed it, only one or two
small component is the problemparts, but huge labor already placed on it. Every
body need to be a Tv guy , who have to know basic electronics. One is the
exception. But new thing need more patience to learn and absorb the new circuit
design.
Thank you
Yu, Ming
A1 Discount E&TV Service (Lic : E79924)
415-724-0005
http://www.the-best-tv-guy.com
2229 San Jose Ave.,
SF, CA 94112
04-03-09
________________________________
From: Ronald Soccoli <resoc@xxxxxxxxxxxxx>
To: tv@xxxxxxxxxxxxxxx
Sent: Friday, April 3, 2009 1:03:03 PM
Subject: [TV] Re: LCD TV's
Guys - Never discount the value of basic electronic theory. I am a
electronic engineer that graduated from Worcester Tech. Have worked
47 years on surface ship sonar, but my background in electronics has
helped me fix numerous ( probably well over 200 ) electronic
devices. So basic theory plus experience (plus common sense) will
certainly produce great results. Good luck guys.
Ron
On Apr 2, 2009, at 10:24 54AM, Otit2@xxxxxxx wrote:
>
>
>
> I am been teaching electronic repair for almost 35 years,during all
> those
> years I graduate about 500 Electronic Technicians,the course went
> for 2 years,4
> hours per week,in the evenings,and so people was able to keep a job
> for while
> they came to school, and the only thing I was teaching was
> electronic plus
> some math to understand some theory, I divide the classes in 2,
> the first 2
> hours was theory and the next 2 hours,practice or lab. where the
> students was
> able to have hands on right from the beginning,is very difficult
> that they
> keep the interest,if you only teach theory for long time before
> they touch any
> thing, on this practice classes they learn color code, wattage and
> size for
> different resistors,test capacitors with the Z meter,how to use
> the tester,use
> of the fingers to check for temperature to see if something was
> working,use
> of the nose to check for overheat components,use of the scope as a
> tool for
> troubleshooting,how to solder special SMC etc and this practice or
> lab classes
> keep the interest very high,the number of people that quit the
> course was
> very low,maybe 2%.-We have tests on theory and practice once in a
> while,also I
> was available on Saturday morning for 4 hours for those that miss
> a class
> during the week for recuperation,was very fun to teach,you can see
> people that
> came that they did know nothing about electronic and after the 2
> years they
> were able to diagnose problems,even I just to have a doctor that
> came to
> classes with his son
> I have many successful stories about this people,many of them doing
> labor
> work and after they graduate as an Electronic Technician they found
> some very
> good jobs in this field,sometimes they call me or visit me to
> thanks me for the
> training,some of them work for the government,my teaching program was
> certified by the State,some of the students pass the CET test,the
> age for this
> courses went from 16 years old to 75.- If I teach today I will
> have to adjust the
> program with this new technology, I remember one guy that work in
> a big
> potato warehouse and was making the minimum salary,when He got his
> certificate,He
> went to his boos and ask for a raise,He was the one keeping all the
> computers running in that plant,they triple his salary right
> away,others companies
> pay for the training,even Welfare pay for some of the students and
> the
> government.- Have a nice day.-
> Tito's TV Sales and Service=CET Id.66
> Saint Anthony-Idaho-83445.-
>
>
>
> In a message dated 4/2/2009 6:46:00 A.M. Mountain Standard Time,
> Steelen@xxxxxxxxxxxxxxxxxxx writes:
>
>
> Thank you Ming!
>
> My school was only a 2 year tech school. They basically tried to
> teach the
> whole field of electronics in two years. Lots of theory, build
> lots of
> circuits. some non electronics classes to meet accreditation
> standards. some
> networking (Basic), PC Hardware, some Programming. It was a good
> foundation, but
> they didn't really tech how to fix things. They taught things you
> need to know
> to fix things, but not the process of repairing things. No quick
> test tips or
> secrets of the pro's. most of my classmates are probably working
> in jobs were
> they test the same circuit board all day or just swap cards to fix
> whatever
> they are working on. I don't want to buy a $200 board because some
> cheap
> parts have failed or a bad solder joint was made. I want to find
> the problem and
> fix it for cheap. I have a limited budget here and I try to save
> it for the
> test equipment I need. They didn't even have a scope when I
> started here, all
> they had was a cheap multi-meter and a decent soldering station. S!
> ometime si buy my own gear on ebay and just bring it in when
> needed, but I
> did make them buy me a scope, a Variable AC supply/isolation
> transformer, ESR
> meter, and function generator/frequency counter. I lack the more
> specialized
> instruments though.
>
> Anyway, sorry to ramble. Thanks for the book I will read it over
> the next
> week or so and see how it goes and thanks again to all for sharing
> your
> suggestions.
>
> Nathan
>
> Nathaniel Steele
> A/V Technician
> AAS-CEET
> Frederick County Public Schools
> 1415 Amherst street,
> P.O. Box 3508
> Winchester, VA 22601
>
> Phone: 1-540-662-4518 ext 88240
> Mobile: 1-540-974-2172
> Fax: 1-540-667-5179
>
>
>>>> Ming Yu <yuming@xxxxxxxxxxxxx> 4/2/2009 3:52 AM >>>
>
> Hi, Dear friend, I am now sending you the link of this e-book. it
> is about
> 13M files.
> The link is "
> http://www.mediafire.com/?sharekey=13d24b809029382fd2db6fb9a8902bda
> " Please look at it carefully, if after finish look at it and still
> need more information you can go to that LCD site to buy that
> information. I
> feel it is so good but it will suit some body's idea. as new model
> LCD, Plasma
> TV are very difficult to change individual small parts. It is
> needed to
> changed the whole board.
> If your school has excellent courses, please tell me so that I can
> go to
> study online. I feel myself did not know so much on LCD and Plasma
> TV as CRT
> Base TVs. These CRT base TV theory I was taught at I was a boy. it
> was very
> wonderful course, every small piece of circuit are explanned very
> detailed so
> that I can work over 40 years still can understand other newer
> circuit. All
> LCD Pasma TV circuit are " MCC "( MO. Cha. Cha. .... Chinese
> pronounciation
> .....At I was a boy MCC means not very clear on every thing ) not
> very clear and
> grasp it with confidence.
>
>
> Thank you
> Yu, Ming
> A1 Discount E&TV Service (Lic : E79924)
> 415-724-0005
> http://www.the ( http://www.the/ )-best-tv-guy.com
> 2229 San Jose Ave.,
> SF, CA 94112
> 04-01-09
>
>
>
>
> Thank You
> Yu, Ming
> A1 Discount E&TV Service (Lic : E79924)
> 415-724-0005
> http://www.the ( http://www.the/ )-best-tv-guy.com
> 2229 San Jose Ave.,
> SF, CA 94112
> 04-01-09
>
>
>
>
> ________________________________
> From: Anthony Clayton <tcccjc@xxxxxxxxxxxxx>
> To: tv@xxxxxxxxxxxxxxx
> Sent: Wednesday, April 1, 2009 10:17:24 PM
> Subject: [TV] Re: LCD TV's
>
>
>
> I wood like a copy of that EBook Ming also thank you in advance
>
>
> --- On Wed, 4/1/09, Randy Drennen <rdrennen@xxxxxxxxxxxxxxxxxx>
> wrote:
>
>> From: Randy Drennen <rdrennen@xxxxxxxxxxxxxxxxxx>
>> Subject: [TV] Re: LCD TVs
>> To: tv@xxxxxxxxxxxxxxx
>> Date: Wednesday, April 1, 2009, 2:28 PM
>> I would like to see that EBook Ming. Could you send me a
>> copy?
>> Have a great day!
>>
>> Randy D.
>> Tech 153
>> ----- Original Message -----
>> From: "Ming Yu" <yuming@xxxxxxxxxxxxx>
>> To: <tv@xxxxxxxxxxxxxxx>
>> Sent: Wednesday, April 01, 2009 3:05 PM
>> Subject: [TV] Re: LCD TVs
>>
>>
>>>
>>> No, it is very simple talking, every thing are
>> external talking, nothing
>>> tell you depth into how it work , and working theory.
>> if you like I will
>>> send you one E-book that is 500 pages of book it will
>> tell you more than
>>> it. This site I already have purchase one, but can not
>> get much benefit.
>>> You still need to have to look at more books.
>>> If you like it, I will upload it to mediafire.com and
>> post the link to
>>> you. After look at this book I have the outlined
>> structure of this LCD,
>>> Plasma TVs, but each circuit still need to find out
>> and study. now every
>>> older TV guy only can changed boards to fix it. If
>> have depth
>>> understanding of computer science may be better to
>> work on new model LCD,
>>> Plasma TVs.
>>>
>>>
>>> Thank you
>>>
>>>
>>>
>>>
>>>
>>> ________________________________
>>> From: Nathan Steele
>> <Steelen@xxxxxxxxxxxxxxxxxxx>
>>> To: TV@xxxxxxxxxxxxxxx
>>> Sent: Wednesday, April 1, 2009 9:46:34 AM
>>> Subject: [TV] LCD TVs
>>>
>>>
>>> Anyone out there have links to some good resources for
>> learning to repair
>>> LCD TVs?
>>> I repair A/V electronics for the School board (21
>> schools in our district
>>> currently). We haven't bought a CRT in over two
>> years and I am just now
>>> starting to get LCD TVs with problems. Anyone
>> know if this site is worth
>>> the money? http://www.lcd ( http://www.lcd/ )-television-
>>> repair.com/
>> I'd like to know a
>>> little more before forking over any money, your
>> experiences or comments
>>> would be appreciated.
>>>
>>> Thanks,
>>> Nathan
>>>
>>> Nathaniel Steele
>>> A/V Technician
>>> AAS-CEET
>>> Frederick County Public Schools
>>> 1415 Amherst street,
>>> P.O. Box 3508
>>> Winchester, VA 22601
>>>
>>> Phone: 1-540-662-4518 ext 88240
>>> Mobile: 1-540-974-2172
>>> Fax: 1-540-667-5179
>>>
>>> This list is brought to you free of charge VIA the
>> members of TechAssist.
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