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JVC RV-NB50B RV-NB50E RV-NB50EN RV-NB50EV RV-NB51WE RV-NB51WEN RV-NB51WEV RV-NB52BB RV-NB52BE RV-NB52BEN RV-NB52BEV RV-NB50J RV-NB50C RV-NB50US RV-NB50A RV-NB52BJ FULL
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(PDF)
(PDF)Size
3.9 MB
3.9 MB
Page
38
38
Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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JVC RVNB-50B RVNB-50E RVNB-50EN RVNB-50EV RVNB-51WE RVNB-51WEN RVNB-51WEV RVNB-52BB RVNB-52BE RVNB-52BEN RVNB-52BEV RVNB-50J RVNB-50C RVNB-50US RVNB-50A RVNB-52BJ FULL RVNB50B RVNB50E RVNB50EN RVNB50EV RVNB51WE RVNB51WEN RVNB51WEV RVNB52BB RVNB52BE RVNB52BEN RVNB52BEV RVNB50J RVNB50C RVNB50US RVNB50A RVNB52BJ RVNB 50 EN EV 51 WE WEN WEV 52 BB BE BEN BEV US BJ RV NB50B NB50E NB50EN NB50EV NB51WE NB51WEN NB51WEV NB52BB NB52BE NB52BEN NB52BEV NB50J NB50C NB50US NB50A NB52BJ RV-NB50B RV-NB50E RV-NB50EN RV-NB50EV RV-NB51WE RV-NB51WEN RV-NB51WEV RV-NB52BB RV-NB52BE RV-NB52BEN RV-NB52BEV RV-NB50J RV-NB50C RV-NB50US RV-NB50A RV-NB52BJ
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Relevant AUDIO forum topics:
Given:
Victor TT-71, neon lamp does not light, speed is lower than normal. This is subsequent some short circuit the owner does inside the device. No further details.
I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.
Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and
Under the circumstances I suspect IC803 is defective. The bad thing, IC803 is NPC SC8043. Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).
Does anybody have any more suggestion?
Also, where can NPC SC4043 be sourced? Also, a crystal 9.054MHz?
Thanks in advance,
Corneliu
Victor TT-71, neon lamp does not light, speed is lower than normal. This is subsequent some short circuit the owner does inside the device. No further details.
I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.
Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and
Under the circumstances I suspect IC803 is defective. The bad thing, IC803 is NPC SC8043. Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).
Does anybody have any more suggestion?
Also, where can NPC SC4043 be sourced? Also, a crystal 9.054MHz?
Thanks in advance,
Corneliu
Szervusztok!
A SEA funkció aktiválásakor "durrannak" a hangfalak. Akkor is, ha ebben a funkcióban hangzást(rock, jazz stb.) váltok, vagy a frekvenciák szintjét állítom. Semmilyen más váltás, gombkezelés, akár forrásválasztás nem okoz ilyen jelenséget. Hozzáértő segítségetek kérem, mert túl azon, hogy a sea körben gondolom a hibát tovább nem jutok.
üdv: bencsik
Üdv mindenkinek. Kérnék egy kis segitséget a "szakiktól" Van egy JVC CA-MXS2 hifim a mi egyik napról a másikra meg adta magát.Se kép se hang. Szétszedtem és a trafo melletti panelben bemértem pár alkatrészt.
D 542 = 33v
D 541 = 32.5V
D 539 =33.7 V
D 540 = 33.7V
D 582 =24V
D 583 =24V
D 584 = -10V
D 581 = -30V
D 580 = -30v
D 585 = -4.2V
D 587 = -12.7V
D 577 = 16.1V
D 575 = -8.9V
D 536 = NINCS ÁRAM
D 561 = NINCS ÁRAM
C 582 = 24.1V
C 583 = 23.5V
C 538 = 33.5V
C 539 = 33.2V
C 571 = 1.9V
C 575 = -0.9v
A sárga Matsushita relé 33vot mértem. De a 3 ellenálláson 0 voltot mértem. Szeretnék segitséget kérni hogy hol lehet a hiba. Nagyon jó kis hifi, már több mint 10 éve megvan.
Elöre is köszönöm a segitséget. Itt található a kapcsolási rajz PDF-be, de ide nem tudom feltölteni,mert 13mb-tos.
D 542 = 33v
D 541 = 32.5V
D 539 =33.7 V
D 540 = 33.7V
D 582 =24V
D 583 =24V
D 584 = -10V
D 581 = -30V
D 580 = -30v
D 585 = -4.2V
D 587 = -12.7V
D 577 = 16.1V
D 575 = -8.9V
D 536 = NINCS ÁRAM
D 561 = NINCS ÁRAM
C 582 = 24.1V
C 583 = 23.5V
C 538 = 33.5V
C 539 = 33.2V
C 571 = 1.9V
C 575 = -0.9v
A sárga Matsushita relé 33vot mértem. De a 3 ellenálláson 0 voltot mértem. Szeretnék segitséget kérni hogy hol lehet a hiba. Nagyon jó kis hifi, már több mint 10 éve megvan.
Elöre is köszönöm a segitséget. Itt található a kapcsolási rajz PDF-be, de ide nem tudom feltölteni,mert 13mb-tos.
Sziasztok !
Kis segítséget szeretnék kérni, a fenti készülék bekapcsolás után azonnal
elindul a CAP motor ,de van egy jellegzetes szaggatott hangja, mintha kihagyna a motor.
A kazetta minden újra lejátszásnál más és más fordulaton játszik,teszt kazettával és frekimérővel ez kb.100 és 200 herz
között változik 1Khz-es jelnél .
Volt Valakinek esetleg ehhez hasonló esete ?
Előre is köszi a segítséget !
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