Service manuals, schematics, eproms for electrical technicians
JVC AV-N21F46
Type: 
(RAR)
(RAR)Size
1.9 MB
1.9 MB
Page
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Category
TV
SERVICE MANUAL
TV
SERVICE MANUAL
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar jvc manual?
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- Also known:
JVC AVN-21F-46 AVN21F46 AVN 21 46 AV N21F46 AV-N21F46
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Relevant TV forum topics:
Üdv, Mindenkinek!
A segítségeteket kérném. 17MB62 alaplapos JVC analóg kábeltévét használva kb 5 percenként elmegy a kép és megjelenik a "nincs jel" fölirat. 2 s -ot számol vissza, majd előjön újra a kép. Bonyolítja a helyzetet, hogy már 2(!) másik alaplappal és másik tápegységgel is kipróbáltam. Sőt másik kezelőt és másik infra panelt is tettem rá. Szerintetek(hogy érzem magam)??? Azt, hogy az eredeti alaplappal hosszasan járatva elmegy a hang egy idő után már meg sem említem..
Sziasztok.
A tárgybéli készülékkel küzdök.
Hang van,osd van kép nincs.Feltekert G2 vel szürkés visszafutásos jelenség van.
Tápfeszek rendben.Forrasztások rendben.
A VDP 3134 Y okozhatja a hibát?
Nagyon nem méjedtem bele egyenlőre.Találkozott már valaki ezzel a hibával?Segítségeteket köszönöm.
Béla
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!
Segítségre lenne szükségem! Tárgybéli készülék zárlatos sorvégtranyóval került hozzám. Csere után sem indult, ezért betettem a 150V-os ágba egy izzót (trafó 3-as lába elé). A nagyfesztrafón a 45V és 15V-os lábakon szép jelet találtam, de a 200V-os lábon igen kicsit. (( GND-hez képest ez a láb 1,5kOhmot mutatott)). Ez a trafó akkor kuka?
A fenti rajzon lévő nagyfesztrafó nem így néz ki belülről, hibás a Service Manual!
Üdv: Jácint
A fenti rajzon lévő nagyfesztrafó nem így néz ki belülről, hibás a Service Manual!
Üdv: Jácint
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