Download - LCD TV Repair Case Histories
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8/14/2019 LCD TV Repair Case Histories
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LCD TV Repair Case
Histories
By: Preher-Tech
www.preher-tech.com1
http://www.preher-tech.com/http://www.preher-tech.com/ -
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Contents
Akai....3
Element....5
Emerson....6
Hyundai....7
LG....8
a!na"o#....1$%hilips....1&
%olaroid....13
'amsun!....15
'anyo....1(
'ceptre....&$
'harp....&1'yl"ania....&&
)oshi*a....&+
,iio....&5
estin!house....&6
/urther eadin!....&8e*sites....3&
%art and )ool 2istri*utors....33
&
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AKAI
LCT2662-
'ymptom
4o power.
epair
eplaced ei!ht &&$$u/ &5, three 33$$u/ 35, and
one 1$$$u/ 16, electrolytic capacitors on the '%' *oard.
LCT271-
'ymptom
4o power stand*y 5, missin!
epair
eplace *oth 1$$$u/ 16, electrolytic capacitors on the '%' *oard.
LCT27!TA-
'ymptom
4o power.
epair
eplaced 1$$$u/ 16, electrolytic capacitors on '%' *oard.
Locations E18 E1( and E&$.
LCT"2#1AD-
'ymptom
), shuts o and stand*ypower LE2 chan!es color.
epair
3
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eplace *ad 1$$$u/ 35, electrolytic capacitors on '%' *oard. Locations E18 E1( and E&$.
LCT$2%6T&-
'ymptom
As ), warms up the picture scram*lesthen the ), shuts down.
epair
eplaced 3&$ 1$$u/ 35" capacitor on the ed!e o the main *oard
"ery close to two '2 re!ulators.
+
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'(e)ent
*L+"21#-
'ymptom
'tand*ypower LE2 li!hts *lue *ut *ackli!hts don9t come on. A red LE2 on thepowerin"erter *oard *links o and on.
epair
eplaced two open capacitors on in"erter *oard.
Locations E17 and E18. :oth were 1$u/ +5$,.
*L+"211B-
'ymptom
4o *ack li!hts
epair
eplaced capacitors E17 and E18 1$u/ +5$ "olts
on the in"erter *oard.
5
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')erson
',L2#-
'ymptom
), turns on *ack li!hts come on and then ), shuts down.
epair
eplaced in"erter *oard.
LC"2#'&!1-
'ymptom
4o power stand*ypower LE2 *links continually
epair
eplaced main *oard.
LC"2#'&!A.-
'ymptom
4o power
epair
eplaced shorted diode in power supply. Location 2633.
6
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Hy/n0ai
'26#D-
'ymptom
4o power stand*ypower LE2 not lit.
epair
eplaced capacitor 6$ ;.$$&& in the stand*y section o the '%' *oard.
LC-2"1!-
'ymptom
4o power powerstand*y LE2 lickerin!
epair
replaced *ad +7$u/ electrolytic capacitor on the secondary side o
the stand*y circuit on '%' *oard.
7
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L
26L+1D-
'ymptom
a"y lines in picture
epair
eplaced two *ad 1$$u/ 16, '2 electrolytic capacitors on the main *oard. Locations 7$8 and7$+.
"2(c20-
'ymptom
4o *ack li!ht
epair
eplaced electrolytic capacitors at locations &$$ and &$& 33$$u/ 1$,
and electrolytic capacitor Location &$8 1$$$u/ 16"olt on '%' *oard.
"2(c20-
'ymptom
?nit will ail when warmed up no "ideo @ust lines.
epair
eplaced *ad electrolytic capacitors at locations &$$ and &$& 33$$u/ 1$, and electrolytic
capacitor at location &$8 1$$$u/ 16"olt on '%' *oard.
8
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"7LC2D-
'ymptom
i!ht take many attempts to turn ), on.
epair
eplaced *ad electrolytic capacitor at location &8$ 1$$$u/ 16, and electrolytic capacitor at location
1&5 +.7u/ 5$, on '%' *oard.
(
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&a3na4o5
1&*""7B-
'ymptom
/lickerin! picture and loud audi*le noise rom ),
may*e *e intermittent start.
epair
eplace *ad electrolytic capacitors on '%' *oard.
Locations 1& 117 and 118 1$$$u/ 16, and Location 175 +7$u/ 16".
"7&*"21D"7-
'ymptom
4o power
epair
eplaced *ad electrolytic capacitors on '%' *oard.)wo &&$$u/ 5$, and two 1$$$u/ 5$,.
"2&*2"1D"7-
'ymptom
'tand*ypower LE2 li!hts *ut ), does not turn on.
epair
eplaced *ad electrolytic capacitors on '%' *oard. Locations &$7( and &$8$ *oth were 1&$$u/35,.
1$
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"2&*""!B*7-
'ymptom
:ack li!hts lickerin!.
epair
/ound 21((+$ shorted and replaced with an 4)E5$6.
11
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Po(aroi0
*L&"7"2-
'ymptom
Loud screechin! noise rom ), speakers
epair
eplaced *ad electrolytic capacitors at locations 11& and 113 *oth 1$$$u/ 1$, on '%' *oard.
*L&"7"2-
'ymptom
'tand*ypower LE2 comes on no picture or audio and ), can not *e turned o without unplu!!in!.
epair
eplaced *ad electrolytic capacitors on '%' *oard. :oth1$$$u/ 1$,
*L&"7"!-
'ymptom
:uin! noise Line throu!h middle o picture and e"entually no power.
epair
eplaced two 1$$$u/ 1$, electrolytic capacitors on '%' *oard.
13
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*L&"7"B-
'ymptom
Loud *u in audio !oes away ater a ew minutes.
epair
eplaced *ad electrolytic capacitors at locations 11& and 113. :oth 1$$$u/ 1$,.
1+
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a)s/n3
L.26A$#-
'ymptom
4o power
epair
eplaced *ad electrolytic capacitor location 861 &&$$u/ 16, only measured +$$u/.
L."2B$#P!D-
'ymptom
4o power or ), turns on *ut with no *ack li!ht.
epair
eplaced shorted diode at location 2%8$5.
L.$#A6#-
'ymptom
/an1 error displayed
epair
eplaced *ad an sometimes cleanin! the an works as well.
15
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L.261D++AA-
'ymptom
4o power
epair
eplaced open .&& ohm resistor on the '%' *oard at location 8$1.
L.$#$1D++AA-
'ymptom
%ower cycles on and o *eore comin! on also may ha"e some lashin! pi#els.
epair
eplaced *ad electrolytic 1$$$u/ 1$, capacitors on '%' *oard.
L.$#1D-
'ymptom
),
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L.T$#61*++AA-
'ymptom
'et had "ertical colored lines no '2;n 'creen 2isplay> and no remote unction
epair
eplaced *ad electrolytic capacitors on '%' *oard. Locations 11 1& 17 and 16.1$$$u/ 16,
L.T$661*-
'ymptom
)akes a while to come on and when it is on there are red dots all o"er the "ideo
epair
eplaced *ad electrolytic capacitors on '%' *oard. Locations '8$+ ,81& and ,813. All were1$$$u/ 16,.
L.T$66*++AA-
'ymptom
%ower relay continually clicks and the ), ne"er comes on.
epair
eplaced *ad electrolytic capacitors on the '%' *oard. Locations 85& and 853. :oth were&&$$u/ 1$,.
17
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L.T$671*++AA-
'ymptom
)he power relay and indicator LE2 continually cycle on and o.
epair
eplaced *ad electrolytic capacitors on the '%' *oard. Locations 85& and 853. :oth were
&&$$u/ 1$,.
L.T271*++AA-
'ymptom
2ead 'et
epair
eplace 853 B 85& *oth &&$$u/ 1$,. 4ote
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anyo
DP"27$6-
'ymptom
'et would not turn on all secondary supply "olta!es would luctuate up and down.
epair
eplaced *ad opto-isolator
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ceptre
+"2V-Ko)o0o-
'ymptom
4o power sometimes stand*ypower LE2 will *link red.
epair
eplaced *ad electrolytic capacitors +7$u/ 1$, and &&$u/ 35, on '%' *oard. Locations '118
and '&$6.
&$
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harp
LC"7D$"8-
'ymptom
4o :ack li!ht
epair
eplaced use ;/75$&> rated )5$$maon the in"erter *oard.
&1
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y(4ania
662#L*$-
'ymptom
4o audio
epair
'horted capacitor1$$u/ 16,. Location 811.
66"7LCT-
'ymptom
4o power
epair
eplaced shorted diode location 26$3 and open use location /6$1 on '%' *oard.
LC2##L!-
'ymptom
4o power
epair
eplaced shorted diode location 2($& on '%' *oard.
&&
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LC"2#L!-
'ymptom
4o power
epair
eplaced shorted diode at location 25$& and open main use on '%' *oard.
LD"7#!-
'ymptom
2EA2
epair
eplaced shorted diode at location 2633 on secondary side o '%' *oard.
L2##6-
'ymptom
4o power
epair
eplaced shorted diode on '%' *oard. Location 2636..
&3
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Toshi9a
2RV"#8-
'ymptom
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Viio
L"7HDTV-
'ymptom
Am*er li!ht comes on *ut ne"er turns !reen ), does not turn on
epair
emo"e '2
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,estin3ho/se
LTV27,2-
'ymptom
), losses picture and sound once warmed up. 'tand*ypower LE2 stays *lue
epair
epaired *ad solder connection on capacitor 31$ on '%' *oard primary side.
LTV27
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LTV"2,$HDC-
'ymptom
%icture reees.
epair
eplaced main *oard.
&7
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*/rther Rea0in3
'ome !ood *ooks to urther your electronics knowled!e.
Electronic and Electrical 'er"icin! onsumer and ommercial Electronics &nd
edition :y
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How )o /ind :urnt esistor ,alue :y Destine Fon!
L2 onitor epair :y Destine Fon!
&(
http://www.electronic-repair-guide.com/?hop=jptv97501http://jptv97501.jestinewilliamlcd.click2sell.eu/http://jptv97501.jestinewilliamlcd.click2sell.eu/http://www.electronic-repair-guide.com/?hop=jptv97501http://www.electronic-repair-guide.com/?hop=jptv97501http://jptv97501.jestinewilliamlcd.click2sell.eu/ -
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)estin! Electronic omponents :y Destine Fon!
)rou*leshootin! B epairin! 'witch ode %ower 'upplies :y Destine Fon!
3$
http://www.electronic-repair-guide.com/?hop=jptv97501http://jptv97501.jestinemichellepow.click2sell.eu/http://jptv97501.jestinemichellepow.click2sell.eu/http://www.electronic-repair-guide.com/?hop=jptv97501http://www.electronic-repair-guide.com/?hop=jptv97501http://jptv97501.jestinemichellepow.click2sell.eu/ -
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)rou*leshootin! 'witchin! %ower on"erters A Hands-on Guide :y 'an@aya
aniktala
'witchin! %ower 'upplies A to :y 'an@aya aniktala
31
http://www.amazon.com/Troubleshooting-Switching-Power-Converters-Hands/dp/0750684216/ref=sr_1_2?ie=UTF8&s=books&qid=1264829276&sr=8-2http://www.amazon.com/Switching-Power-Supplies-Sanjaya-Maniktala/dp/0750679700/ref=sr_1_4?ie=UTF8&s=books&qid=1264829217&sr=8-4http://www.amazon.com/Switching-Power-Supplies-Sanjaya-Maniktala/dp/0750679700/ref=sr_1_4?ie=UTF8&s=books&qid=1264829217&sr=8-4http://www.amazon.com/Troubleshooting-Switching-Power-Converters-Hands/dp/0750684216/ref=sr_1_2?ie=UTF8&s=books&qid=1264829276&sr=8-2http://www.amazon.com/Troubleshooting-Switching-Power-Converters-Hands/dp/0750684216/ref=sr_1_2?ie=UTF8&s=books&qid=1264829276&sr=8-2http://www.amazon.com/Switching-Power-Supplies-Sanjaya-Maniktala/dp/0750679700/ref=sr_1_4?ie=UTF8&s=books&qid=1264829217&sr=8-4 -
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,e9sites
'ome !ood we*sites or electronics inormation.
%reher-)ech :lo!
%reher-)ech Electronics )ools and )ips %a!e
L2 ), repair mem*ership site
%lasma ), repair mem*ership site
%ro@ection ), repair mem*ership site
electronicrepair!uide.com
Destine Fon!9s :lo!
astrepair!uide.com
3&
http://preher-tv.blogspot.com/http://preher-tech.com/tools_and_tips.aspxhttps://paydotcom.com/r/41874/jptv97501/24320174/https://paydotcom.com/r/28939/jptv97501/24320471/https://paydotcom.com/r/78425/jptv97501/24848135/http://www.electronicrepairguide.com/http://www.jestineyong.com/http://www.fastrepairguide.com/http://preher-tv.blogspot.com/http://preher-tech.com/tools_and_tips.aspxhttps://paydotcom.com/r/41874/jptv97501/24320174/https://paydotcom.com/r/28939/jptv97501/24320471/https://paydotcom.com/r/78425/jptv97501/24848135/http://www.electronicrepairguide.com/http://www.jestineyong.com/http://www.fastrepairguide.com/ -
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Part an0 Too( Distri9/tors
Here are the parts distri*utors < most commonly use to !et all the parts < need or
i#in! L2 ),s.
'u*ur*an
Encompass
ouser
And < also always like lookin! on e*ay < ha"e *ou!ht many ), and electronic
components on that site in !eneral with !reat deals and < ha"e only had !reattransactions so ar. nly *uy rom reputa*le dealers.
P(aces to p/rchase an 'R )eter-
Electronic epair Guide;also sells in! )ester>
Anatek;also sells in! )ester>
E,:
adio 2e"ices;the E' micro which also checks capacitance>
CC*L Testers-
H-)L1$+$
L')$1
oo0 p(ace to 9/y a==or0a9(e 0i3ita( )/(ti)eters an0 ana(o3/e )eters-
ultimeter arehouse
http://www.suburban-electronics.com/http://www.encompassparts.com/http://www.mouser.com/http://www.mcmelectronics.com/http://www.electronicrepairguide.com/blue-esr-meter.htmlhttp://www.anatekcorp.com/http://clientes.netvisao.pt/greenpal/evb1.htmhttp://www.radiodevices.ru/esr/esr4.htmhttp://www.electronica-usa.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EU&Product_Code=HRTL1040http://www.lcdparts.net/LST01.aspxhttp://www.multimeterwarehouse.com/http://www.suburban-electronics.com/http://www.encompassparts.com/http://www.mcmelectronics.com/http://www.electronicrepairguide.com/blue-esr-meter.htmlhttp://www.anatekcorp.com/http://clientes.netvisao.pt/greenpal/evb1.htmhttp://www.radiodevices.ru/esr/esr4.htmhttp://www.multimeterwarehouse.com/http://www.mouser.com/http://www.electronica-usa.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EU&Product_Code=HRTL1040http://www.lcdparts.net/LST01.aspx