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JVC LT-42Z49 SCH
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(PDF)
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6.3 MB
6.3 MB
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24
24
Category
TV
SERVICE MANUAL
TV
SERVICE MANUAL
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JVC LT-42Z-49 LT42Z49 LT 42 49 42Z49 LT-42Z49
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Relevant TV forum topics:
JVC AV-21FMG4G Chassis SCW-1362A CRT TV blinks continuously after three failing power on attempts.
According to the customer, the upper portion of the screen started shrinking with horizontal lines, then ended with a single thin horizontal line.
This suspects the vertical drive section to be problematic. No vertical output though vertical in put is OK. After conducting an ESR check for capacitors in the vertical section, C428 (100uF 35V), connecting VCC1 with Pump-up pin # 3 of the IC, it measured 1200pF. It was replaced but still no vertical output. So changed the vertical IC401 (TDA78040), and the output appeared, but still blinks after three failing start-ups. I, m suspecting the corrupt EEPROM data.
CPU: TDA11010H / N1D00
EEPROM: 24C16A
Any one with EEPROM dump for this model or any help please?
According to the customer, the upper portion of the screen started shrinking with horizontal lines, then ended with a single thin horizontal line.
This suspects the vertical drive section to be problematic. No vertical output though vertical in put is OK. After conducting an ESR check for capacitors in the vertical section, C428 (100uF 35V), connecting VCC1 with Pump-up pin # 3 of the IC, it measured 1200pF. It was replaced but still no vertical output. So changed the vertical IC401 (TDA78040), and the output appeared, but still blinks after three failing start-ups. I, m suspecting the corrupt EEPROM data.
CPU: TDA11010H / N1D00
EEPROM: 24C16A
Any one with EEPROM dump for this model or any help please?
Sziasztok!
Egyik ismerősöm hozta, hogy naponta többször el megy a hang, de csak kikapcsolás és újra bekapcsolás után van ismét hang. A main típusa T.MT5310.S97A, a hang végfoka pedig STA3390W. Merre induljak el, mert most nálam csak 2-3 naponta csinálja.
Szevasztok !
A készülék a távra reagál,a led zöldre vált és működik.Van olyan eset ,hogy a led zöldre vált a táp indul,viszont a háttérfény nem kapcsol és hang sincs.
A táp CEM 842 A ,a MAIN T.MT 5310.S 97 A ?.
Amikor a led átvált zölre és nem indul a háttér és nincs hang,akkor a main power csatlakozóján nincs meg a 2,68 V és az 5.54 V.Működő állapotban ennyit mértem.Az U6 stabon a 3.3 V fesz 3.47 V-ra emelkedik amikor nincs kép- hang.
Itt megakadtam, ezért kérnék manualt,segítő ötletet.
Üdv.:ferenc.
Sziasztok
JVC LT-55VU73K LED TV
A TV normalisan mukodik, de magatol lehuzza a hangerot nullara. Nyilvan nem taviranyito problema, az volt az elso amit a gazdaja megnezett.
A TV nincs nalam, en harom hibat tartok valoszinunek:
1. Oxid, athuzas, stb a hangero gombnal.
2. Hibas kondi a hangero vonalon
3. Proci hiba.
Kerlek, ha valakinek van tapasztalata segitsen, vallaljam el ezt a TV-t javitasra, vagy proci lesz a vege?
Sassze Vestel 17MB130P
Tap 17IPS72
Minden jot.
Janos
JVC LT-55VU73K LED TV
A TV normalisan mukodik, de magatol lehuzza a hangerot nullara. Nyilvan nem taviranyito problema, az volt az elso amit a gazdaja megnezett.
A TV nincs nalam, en harom hibat tartok valoszinunek:
1. Oxid, athuzas, stb a hangero gombnal.
2. Hibas kondi a hangero vonalon
3. Proci hiba.
Kerlek, ha valakinek van tapasztalata segitsen, vallaljam el ezt a TV-t javitasra, vagy proci lesz a vege?
Sassze Vestel 17MB130P
Tap 17IPS72
Minden jot.
Janos
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