Service manuals, schematics, eproms for electrical technicians
KOLSTER-BRANDES LR15
Type: 
(PDF)
(PDF)Size
1.2 MB
1.2 MB
Page
2
2
Category
AUDIO
SERVICE MANUAL
AUDIO
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!
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- Also known:
LR-15 LR15 LR 15 KOLSTER BRANDES
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Relevant AUDIO forum topics:
Sziasztok!
A fent említett Sony DAV-S500 típusú készülék bekapcsoláskor időnként "Protect" üzenetet ír ki és letilt. Ez a kimenetek túlterhelés elleni védelmének bekapcsolását jelezné, de hangszórók nélkül is megjelenik. Néha elindul rendesen, akkor minden rendben, nincs gond a hangjával. A tápban és a végfok panelen minden szóbajöhető kondit cseréltem, de nem sokkal lett jobb. Volt már valakinek ilyen hibája?
Megoldás:
A DIAG lábakat egyenként leválasztva kiderült, hogy az egyik (és mindig ugyanaz) CXD9646Z okozza mindig a hibát, melegen, de terhelés nélkül is hibát jelez. A hővezető paszta cseréje sem segített. Egy ismerős talált egy komplett végfokpanelt (a terasz alatt, egy nyúlketrecben), azt letisztítva és beépítve a gép üzemel.
Köszi mindenkinek a segítséget!
imrus101
Csákó!
Nem lenne valakinek infoja erről a hangváltóról?
A hangfal egyébként 150/300W-os.
Előre is köszi!
Karcsi
I have and found most of the voltages as indicated on the circuit diagram, till op amp M 5218P; are near those specifed. The output on the centre of the two power transistors of both the channels are also alright.
While looking at the voltages on test points as mentioned on the page 7 for setting up quiscent current, these cannot be set.
Bit of history, the amplifier was lying unused for long time. Nothing in it has burnt. It was never opened earlier than this time, couple of days back.
While looking at the voltages on test points as mentioned on the page 7 for setting up quiscent current, these cannot be set.
Bit of history, the amplifier was lying unused for long time. Nothing in it has burnt. It was never opened earlier than this time, couple of days back.
While I was probing for voltages with DMM, with probe on collector of TR413 one of the fuses blew up. Later same thing happened on the other channel as well.
With the above as background can a Good Samaritan figure out feasibility of repair.
i am unable to upload service manual as file size is 7.3 mb
Sziasztok!
Adott a címben szereplő erősítő .Sajna mindkét végfok elszállt benne.A végfokok STK 4038 II hallgatnak.Kérdésem az volna van-e valakinek bontott,használható esetleg,mert újonnan 6-7000 ft-ba fájna és nem ér annyit még műhely erősítőnek sem!(németből jött).Vagy esetleg valami gazdaságosabb helyettesítő létezik-e?
Megtisztelő segítségeteket előre is köszönöm.mika
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