Service manuals, schematics, eproms for electrical technicians
JVC GM-P420,420 CH S3 SM
Type: 
(RAR)
(RAR)Size
3.7 MB
3.7 MB
Page
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Category
TV
SERVICE MANUAL
TV
SERVICE MANUAL
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Good luck to the repair!
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Looking for similar jvc manual?
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- Also known:
JVC GMP-420 S-3 GMP420 420 CH S3 GMP GM P420 GM-P420
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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?
A fenti tv javításához szeretnék segítséget kérni. A fehér szín időnként átmegy lilába, majd visszajön. Jelgenerátorral vizsgálva, fehér színt beadva, a TDA 4780 video processzor zöld kimenetén a jel szintje csökken. A processzort cserélve az újnál is ugyanez van. Hogyan lehetne itt továbblépni? Előre is kösz.
Üdv:kollerp
Sziasztok a fenti Lcd tv-nek a bal szélén függőleges csikok láthatók.Tud valaki segiteni.Kép mellékelve
Sziasztok!
Adott ez a JVC LT-32V54LWA led tv. Sajnos csak a JVC logót ismételgeti, 10 másodpercenként újraindul. A stby led végig villog, úgy ahogy az indításkor szokott.
Kerestem USB frissítést hozzá, lehet hogy elég lenne a bootloader helyreállító is - de ami linket találtam azokról már törölték a fájlokat.
Volt valami vesteles oldal, ahol a vonalkód feletti számsor alapján lehetett letölteni firmware-t. Most ezt sem találom.
Az azonosító: 10120692 1812800104
Előre is köszönöm a segítséget!
Joco
Adott ez a JVC LT-32V54LWA led tv. Sajnos csak a JVC logót ismételgeti, 10 másodpercenként újraindul. A stby led végig villog, úgy ahogy az indításkor szokott.
Kerestem USB frissítést hozzá, lehet hogy elég lenne a bootloader helyreállító is - de ami linket találtam azokról már törölték a fájlokat.
Volt valami vesteles oldal, ahol a vonalkód feletti számsor alapján lehetett letölteni firmware-t. Most ezt sem találom.
Az azonosító: 10120692 1812800104
Előre is köszönöm a segítséget!
Joco
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