Service manuals, schematics, eproms for electrical technicians
BRAUN T1000 SCH
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(ZIP)
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3.9 MB
3.9 MB
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Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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Good luck to the repair!
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Looking for similar braun manual?
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BRAUN T-1000 T1000 1000
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Relevant AUDIO forum topics:
Hello everyone,
I've this speaker model:
RCF art 415-A.
The power supply is faulty, no votltage out to the amplifier.
The Mosfets are blown. I've changed the mosfets and it's driver, and still have a problem.
I tried to switch on but only one of the mosfets gets hot (the one which switches the 310. There are 2 of them - Mos5 in the scheme).
Obviously I turned it off.
1) What causes it to heat?
2) Testing the VCC of the LMC555, it's only 2.7V. When taking it out of the circuit, it's 12VDC! What makes the voltage to drop. Where does the supply of the LMC555 come from? The VCC of the 555 should be around 10V, as compared with a good card.
I've changed the 555, but the problem remained. I've checked the components around, resistors and capacitors, and transistors, and seem to be OK.
4) The VCC of the Mosfet driver is 10V, but should be 12V if compared with a good card.
3) Could the trafo be damaged? Are these parts reliable or may blow up?
4) What is the purpose of the optocoupler in the circuit?
I would really appreciate any help.
I didn't find the 100% schemes for this RCF (400), but found a very similar one (The 600 version).
name and a link here to download the pdf.
DigiPRO600B
https://elektrotanya.com/db-technologies_digipro600b_sch.pdf/download.html
Regards and many thanks
I've this speaker model:
RCF art 415-A.
The power supply is faulty, no votltage out to the amplifier.
The Mosfets are blown. I've changed the mosfets and it's driver, and still have a problem.
I tried to switch on but only one of the mosfets gets hot (the one which switches the 310. There are 2 of them - Mos5 in the scheme).
Obviously I turned it off.
1) What causes it to heat?
2) Testing the VCC of the LMC555, it's only 2.7V. When taking it out of the circuit, it's 12VDC! What makes the voltage to drop. Where does the supply of the LMC555 come from? The VCC of the 555 should be around 10V, as compared with a good card.
I've changed the 555, but the problem remained. I've checked the components around, resistors and capacitors, and transistors, and seem to be OK.
4) The VCC of the Mosfet driver is 10V, but should be 12V if compared with a good card.
3) Could the trafo be damaged? Are these parts reliable or may blow up?
4) What is the purpose of the optocoupler in the circuit?
I would really appreciate any help.
I didn't find the 100% schemes for this RCF (400), but found a very similar one (The 600 version).
name and a link here to download the pdf.
DigiPRO600B
https://elektrotanya.com/db-technologies_digipro600b_sch.pdf/download.html
Regards and many thanks
Hi!
Hoznának egy ilyet. Valszeg végfokos.
Érdemes belebonyolódni, lehet kapni megbízható ilyent?
kösz
Hoznának egy ilyet. Valszeg végfokos.
Érdemes belebonyolódni, lehet kapni megbízható ilyent?
kösz
Sziasztok.
Segítségeteket kérném a címben említett keverő javításában.
Hozták hozzám javítani,előéletéről csak anyit mondtak: gerjed a kimenet, a tápkábelét pedig egy sorkapocsal kötötték vissza, mivel a gyári kiszakadt belőle.
Megbontva szemmel látszott 2 db rossz kondi ezeket cseréltem, de nem javult, majd megmérve a reg1-reg2-reg3 icket zárlatot méretem így ezeket is cseréltem.
A hiba így sem javult, és a TK2/PFL led is folyamatosan világít. konkrét rajzot nem találtam hozzá ilyen néven.
Esetleg kapcsolási rajzot, vagy néhány tanácsot elfogadnék.
Can anyone help me with this service manual?
I have a unit with damaged Ethernet port.
I have a unit with damaged Ethernet port.
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