[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[TV] Re: LCD TV's
I have replaced just the y sustain board , but set comes back in a month --
now I replace both y and z together - no more problem...
Dennis
----- Original Message -----
From: <Otit2@xxxxxxx>
To: <tv@xxxxxxxxxxxxxxx>
Sent: Friday, April 03, 2009 4:34 PM
Subject: [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.-
>
>
> ____________________________________
> Feeling the pinch at the grocery store? _Make dinner for $10 or less_
> (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001) .
>
> 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.
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> ------
>>>> To remove or add email address
>>> http://www.circuitwork.com/join.htm
>>>>
>>>> Join our Pro only site, with a Professional Only email
>>> list:
>>>> http://tech ( http://tech/ )-assist.org/register.htm
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> ------
>>>>
>>>> TV email Archives at:
>>> http://www.circuitwork.com/archive/TV.
>>>> ------------------------------------------------------
>>>>
>>>> This list is brought to you free of charge VIA the
>>> members of TechAssist.
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> ------
>>>> To remove or add email address
>>> http://www.circuitwork.com/join.htm
>>>>
>>>> Join our Pro only site, with a Professional Only email
>>> list:
>>>> http://tech ( http://tech/ )-assist.org/register.htm
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> ------
>>>>
>>>> TV email Archives at:
>>> http://www.circuitwork.com/archive/TV.
>>>> ------------------------------------------------------
>>>>
>>>>
>>>> __________ NOD32 3981 (20090401) Information
>>> __________
>>>>
>>>> This message was checked by NOD32 antivirus system.
>>>> http://www.eset.com ( http://www.eset.com/ )
>>>>
>>>>
>>>
>>> This list is brought to you free of charge VIA the members
>>> of TechAssist.
>>>
>>> ---------------------------------------------------------------------
>>> ------
>>> To remove or add email address
>>> http://www.circuitwork.com/join.htm
>>>
>>> Join our Pro only site, with a Professional Only email
>>> list:
>>> http://tech ( http://tech/ )-assist.org/register.htm
>>>
>>> ---------------------------------------------------------------------
>>> ------
>>>
>>> TV email Archives at:
>>> http://www.circuitwork.com/archive/TV.
>>> ------------------------------------------------------
>> This list is brought to you free of charge VIA the members of
>> TechAssist.
>> ----------------------------------------------------------------------
>> -----
>> To remove or add email address http://www.circuitwork.com/join.htm
>>
>> Join our Pro only site, with a Professional Only email list:
>> http://tech ( http://tech/ )-assist.org/register.htm
>> ----------------------------------------------------------------------
>> -----
>>
>> TV email Archives at: http://www.circuitwork.com/archive/TV.
>> ------------------------------------------------------
>>
>> This list is brought to you free of charge VIA the members of
>> TechAssist.
>> ----------------------------------------------------------------------
>> -----
>> To remove or add email address http://www.circuitwork.com/join.htm
>>
>> Join our Pro only site, with a Professional Only email list:
>> http://tech ( http://tech/ )-assist.org/register.htm
>> ----------------------------------------------------------------------
>> -----
>>
>> TV email Archives at: http://www.circuitwork.com/archive/TV.
>> ------------------------------------------------------
>>
>>
>> --- Scanned by M+ Guardian Messaging Firewall ---
>>
>>
>> This list is brought to you free of charge VIA the members of
>> TechAssist.
>> ----------------------------------------------------------------------
>> -----
>> To remove or add email address http://www.circuitwork.com/join.htm
>>
>> Join our Pro only site, with a Professional Only email list:
>> http://tech-assist.org/register.htm
>> ----------------------------------------------------------------------
>> -----
>>
>> TV email Archives at: http://www.circuitwork.com/archive/TV.
>> ------------------------------------------------------
>>
>>
>>
>>
>>
>> **************Feeling the pinch at the grocery store? Make dinner
>> for $10 or
>> less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001)
>>
>>
>> This list is brought to you free of charge VIA the members of
>> TechAssist.
>> ----------------------------------------------------------------------
>> -----
>> To remove or add email address http://www.circuitwork.com/join.htm
>>
>> Join our Pro only site, with a Professional Only email list:
>> http://tech-assist.org/register.htm
>> ----------------------------------------------------------------------
>> -----
>>
>> TV email Archives at: http://www.circuitwork.com/archive/TV.
>> ------------------------------------------------------
>>
>
> This list is brought to you free of charge VIA the members of
> TechAssist.
> ---------------------------------------------------------------------------
> To remove or add email address http://www.circuitwork.com/join.htm
>
> Join our Pro only site, with a Professional Only email list:
> http://tech-assist.org/register.htm
> ---------------------------------------------------------------------------
>
> TV email Archives at: http://www.circuitwork.com/archive/TV.
> ------------------------------------------------------
>
> This list is brought to you free of charge VIA the members of
> TechAssist.
> ---------------------------------------------------------------------------
> To remove or add email address http://www.circuitwork.com/join.htm
>
> Join our Pro only site, with a Professional Only email list:
> http://tech-assist.org/register.htm
> ---------------------------------------------------------------------------
>
> TV email Archives at: http://www.circuitwork.com/archive/TV.
> ------------------------------------------------------
>
>
>
>
>
> **************Feeling the pinch at the grocery store? Make dinner for $10
> or
> less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001)
>
>
> This list is brought to you free of charge VIA the members of TechAssist.
> ---------------------------------------------------------------------------
> To remove or add email address http://www.circuitwork.com/join.htm
>
> Join our Pro only site, with a Professional Only email list:
> http://tech-assist.org/register.htm
> ---------------------------------------------------------------------------
>
> TV email Archives at: http://www.circuitwork.com/archive/TV.
> ------------------------------------------------------
>
This list is brought to you free of charge VIA the members of TechAssist.
---------------------------------------------------------------------------
To remove or add email address http://www.circuitwork.com/join.htm
Join our Pro only site, with a Professional Only email list:
http://tech-assist.org/register.htm
---------------------------------------------------------------------------
TV email Archives at: http://www.circuitwork.com/archive/TV.
------------------------------------------------------