Service manuals, schematics, eproms for electrical technicians
JVC AV-N48P55H N56P55PR
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TV
SERVICE MANUAL
TV
SERVICE MANUAL
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- Also known:
JVC N-56P-55PR AVN48P55H N56P55PR AVN 48 55 56 PR AV N48P55H AV-N48P55H
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Relevant TV forum topics:
Sziasztok.
Bajban vagyok. Adott egy JVC 11AK19Y-os tv amiben szerintem beteg a PTC. Az igazság hogy már nagyon régen cseréltem, akkor mindig jó lett, most beraktam egy másikat egy Philips tv-ből és rögtön kilőtte a biztit. Ami benne volt az egy MZ73B 14ohmM (ez van ráírva), és amit találtam a HQ-nál az pedig ez: http://www.hqelektronik.hu/info/hu/ptc30rm270v.html és nem stimm valami szerintem. 30/380ohm a HQ-s az enyém pedig 14ohm-os, pedig a betűjelzés ugyanaz. Valaki világosítson fel hogy jó-e, mert ami kilőtte a biztit az 35/165ohm-os volt.
Köszi előre is.
Üdv
Ide írom mert ugyan az a TV és elakadtam. Ez egy JVC és nem indul el. A tápban cseréltem az MC ic-t, a fet-et, a puffer elkót, az optocsatolót és semmi. A készenléti piros led 3-4 másodperc múlva kigyullad és ennyi. A szekunder oldalon nincs meg a 150V és a többi is hiányos. Segítsetek légyszi hova nyúljak mert most még gondolkozni se tudok, van egy kis egyéb baj. Viszont meg kellene csinálnom mert az enyém és lemaradok a jóról. :)
Köszi előre is!
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!
Nevezett készülék villámlást követően nem adott életjelet. Tápegységének készenléti áramköre hibás volt. Ezt javítva már van készenlét, sőt (látszólag) be is lehet kapcsolni. Mérve hamar kiderül, nem indul az üzemi táp. Ennek meghajtója vélhetően rossz, hiszen mérések azt mutatják. Na itt jön a bökkenő, mert semmit nem találok róla... 1D11101.
Esetleg valakinek ötlete???
Köszönettel: Kiss Z.
Nevezett készülék villámlást követően nem adott életjelet. Tápegységének készenléti áramköre hibás volt. Ezt javítva már van készenlét, sőt (látszólag) be is lehet kapcsolni. Mérve hamar kiderül, nem indul az üzemi táp. Ennek meghajtója vélhetően rossz, hiszen mérések azt mutatják. Na itt jön a bökkenő, mert semmit nem találok róla... 1D11101.
Esetleg valakinek ötlete???
Köszönettel: Kiss Z.
hello
i need the software in the memory IC /eeprom of a jvc LT-42A85BU LCD TV. anyone can help please?
maybe someone has this board and want to make a copy? the software is damaged in my tv, it's useless now :(
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