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Author Topic: [Help] Goldstar 14"tv Horizontal blue line only  (Read 459 times)

Offline sodz

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[Help] Goldstar 14"tv Horizontal blue line only
« on: June 22, 2012, 10:53:28 AM »
Gud day mga masters need your help i repaired Goldstar model CN-14A14G

chassis no. NC- 4HA 111-M45B

Vert IC La7837
HOT D 1651
Jungle LA7674
REG IC STK50092

Problem = Vertical Sweep Problem, isang horizontal line ang makikita
pumotok la7837

action taken 1= replace la7837 , no luck

action taken2=
check again mga resistor at supply

found no 24v, replace FR ok na 24v,
found open 5.61ohm, 3,91 ohm at 103ohm five band resistor

still no luick

action taken3= replace all caps still no luck

i found supply at at la7837 pin 1= 7.8 v only at 28v at pin8 when  osc

please masters i need your help, and please sent me diagram if you have, thanks in advance

 
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[Help] Goldstar 14"tv Horizontal blue line only
« on: June 22, 2012, 10:53:28 AM »

Offline MX45

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #1 on: June 22, 2012, 11:24:05 AM »
Quote from: sodz on June 22, 2012, 10:53:28 AM
Gud day mga masters need your help i repaired Goldstar model CN-14A14G

chassis no. NC- 4HA 111-M45B

Vert IC La7837
HOT D 1651
Jungle LA7674
REG IC STK50092

Problem = Vertical Sweep Problem, isang horizontal line ang makikita
pumotok la7837

action taken 1= replace la7837 , no luck

action taken2=
check again mga resistor at supply

found no 24v, replace FR ok na 24v,
found open 5.61ohm, 3,91 ohm at 103ohm five band resistor

still no luick

action taken3= replace all caps still no luck

i found supply at at la7837 pin 1= 7.8 v only at 28v at pin8 when  osc

please masters i need your help, and please sent me diagram if you have, thanks in advance

 




anong reference designator ng mga resistor na to? sure kaba sis sa value nito?
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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #1 on: June 22, 2012, 11:24:05 AM »

Offline MX45

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #2 on: June 22, 2012, 11:29:09 AM »
palitan mo narin yung ecap sa Supply ng Vertical

kung may service sw. ito baka nagalaw mo.
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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #2 on: June 22, 2012, 11:29:09 AM »

Offline TBG

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #3 on: June 22, 2012, 11:38:21 AM »
right c mx45,baka nagalaw mo ang service switch.kung ok naman ang service sw,baka wala kang vertical input sa pin #2 galing ng chroma(la7674)
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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #3 on: June 22, 2012, 11:38:21 AM »

Offline sodz

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #4 on: June 22, 2012, 11:48:09 AM »
thanks sa reply, indi ako sure sis ito color nya, brwn-blk-orng-blk-brwn= 103 ohm palitan ng 100ohm

grn-blue-brwn-silver-silver= 5.61ohms palitan ng 5.6

at orng-wht-brwn-silver-siver=3.9ohms  palit ng 3.9 tama ba?

ginalaw ko na service switch ala pa rin?


try ko mamaya palit ecaps sa supply.

pano malaman kung may signal sa pin2? tia mga sis 
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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #4 on: June 22, 2012, 11:48:09 AM »

Offline NORTH LUZON

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #5 on: June 22, 2012, 11:55:29 AM »
may mali sa value ng resistor
duble check
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Offline ultrasonic™

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #6 on: June 22, 2012, 12:05:44 PM »
ito ang mapa sa vert sect nyan ts




DL mu dito ang full manuals  kng knakailangan...
-->> http://www.4shared.com/file/PGVRIJMX/Goldstar_NC-4HA.html
passcode: check my PM
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Offline NORTH LUZON

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #7 on: June 22, 2012, 12:08:08 PM »
eto na ang sagot sa problema ng ts
ang galing talaga ni sis ultra
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Offline sodz

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #8 on: June 22, 2012, 06:01:52 PM »
Quote from: MX45 on June 22, 2012, 11:29:09 AM
palitan mo narin yung ecap sa Supply ng Vertical

kung may service sw. ito baka nagalaw mo.

nagpalit nako supply ecaps, wala parin

bakit kaya resistor 103ohm sa C314, 5.61ohm sa C305 at 3.91ohm sa C303  nakalagay,

at naging open ang mga resistor nato,


anyway salamat sis ultra sa skema,

ano kaya next kong gawin, i need more help, thanks
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Offline sodz

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #9 on: June 25, 2012, 08:57:05 AM »
binalik ko yong tatlong resistor na tinanggal at pinalitan ko,

back to normal na boltahe pin 1=12v pin 8=24 v

pero one blue horizontal line parin, ano kaya to yoke or vert ic ulit.
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Offline NORTH LUZON

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #10 on: June 25, 2012, 09:55:40 AM »
Quote from: sodz on June 22, 2012, 06:01:52 PM
nagpalit nako supply ecaps, wala parin

bakit kaya resistor 103ohm sa C314, 5.61ohm sa C305 at 3.91ohm sa C303  nakalagay,

at naging open ang mga resistor nato,


anyway salamat sis ultra sa skema,

ano kaya next kong gawin, i need more help, thanks

bakit ganito ito?
resistor sa c314?
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Offline ronelex

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #11 on: June 25, 2012, 11:32:56 PM »
pa.sub, mukhang maganda it0ng abangan
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Offline mcleod

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #12 on: June 27, 2012, 10:18:44 PM »
aYOS capacitors palitan ng resistor. totoo ba ito?
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Offline NORTH LUZON

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #13 on: June 28, 2012, 10:30:15 AM »
Quote from: mcleod on June 27, 2012, 10:18:44 PM
aYOS capacitors palitan ng resistor. totoo ba ito?

abangan natin sis baka may multo
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Offline sodz

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #14 on: June 28, 2012, 02:58:34 PM »


eto po sa diagram c305 = blue,green,brown,silver,silver ang color code ng resistor,
                         c303= orange,white,brown,silver,silver color code
                         c314= brwn,black,red,black,brwn ang color

ano ba talaga eto mga master resistor  o capacitor?


pero nung ibinalik ko ang mga to sa board ok na voltahe?

gagawin ko mamaya palitan ang chroma, kasi parang walang trigger sa vert ic,

salamat  
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Offline NORTH LUZON

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #15 on: June 28, 2012, 03:03:27 PM »
Quote from: sodz on June 28, 2012, 02:58:34 PM

eto po sa diagram c305 = blue,green,brown,silver,silver ang color code ng resistor,
                         c303= orange,white,brown,silver,silver color code
                         c314= brwn,black,red,black,brwn ang color

ano ba talaga eto mga master resistor  o capacitor?


pero nung ibinalik ko ang mga to sa board ok na voltahe?

gagawin ko mamaya palitan ang chroma, kasi parang walang trigger sa vert ic,

salamat 

capacitor yan sis
ndi yan resistor

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Offline sodz

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #16 on: June 28, 2012, 03:11:56 PM »
ganun ba sis, salamat ha, bagohan pa kasi ako,kitam di ako nagsisi sumali dito dami ko natutunan,

mukhang resistor may color code pa capacitor pala,thanks sis, mamaya titirahin ko may chroma yung isang

tv hihiramin ko para malaman na, salamat bay
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Offline jaguar3275

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #17 on: June 28, 2012, 03:12:54 PM »
color coded pala na capacitors..

nf convert mo lang into uf..

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Offline de PatAtas

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #18 on: June 28, 2012, 05:22:47 PM »
' kanino kayang TV to? sa TS or pinagawa sa TS.. 
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Offline sodz

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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #19 on: June 29, 2012, 08:49:20 AM »
pinagawa sa akin sis, hah napalitan ko na ng chroma 7674 wala pa rin

any suggestions mga masters
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Re: [Help] Goldstar 14"tv Horizontal blue line only
« Reply #19 on: June 29, 2012, 08:49:20 AM »
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