I greet you! I would need the scheme of this "vintage" amplifier that needs to be "restored". The problem is that in the prefinal and final floor I have many "fried" resistors well, their value cannot be identified.I replaced the defective transistors: 2SC1509, 2SA777,2SB690 and 2SD 796 (each 2 pcs.) and the electrolytic capacitors adjacent to them. I could not go further because of the carbonized resistors that I do not know their value (I can only guess that they are values small, in the order of ohms). The schematic diagram I downloaded, from the address received by the kindness of a colleague is not complete - it is a single page (missing Q29-Q30-Q31-Q3 and resistors R115-R116-R117-R118 which are completely carbonized, at other resistors I could see their value).Thanks in advance!
Finally, I found the missing part
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Sziasztok!
Ez a 3CD-s torony a tányért néha nem a CD "lukra" rakja hanem felibe és beszorul a tányér.
Valamikor 10x is forgatgatom jó helyre áll be .
Rosszak voltak a nyomogombok azokat kicseréltem. A tányérfogatás csigás, NEM gumiszijjas, így a megcsuszást kizárom.
Opto-kaput alkohollal megmostam már.
A tányéron az opto rések megvannak.
Lift gumiszijjas, de az jól müködik.
Lézer olvas.
Amikor kint van a tányér , már ott is félre tudja állítani pl "CD CHANGE" gombbal, motort is megfujtam már WD spay-el, nem erôlködik.
Amikor behuzza a tányért valamikor 2 teljes kört is forgat, de nem mindig.
Amikor "felesre" állitja magát, akkor a motor általában lelassul máshogyan is zug.. Ilyenkor megnyomom az EJECT-et kinyilik a tányér és következô becsukásnál már lehet hogy jó is lesz.
Volt valakinek ehhez hasonló hibája?
Sziasztok!
Valaki mostanában nem bontott esetleg SONY.....
TC-WR500, W170, W190, W250, W310, W380...
Vagy hasonló decket?
Mert amit nagyon keresek 7db-ot, az a mellékelt képen bekarikáztam.
Erre ülnek a funkció gombok a mechanikánál.
Előre is köszönöm.
Hi all !
I plug the plug into the socket. The blue standby LED lights up. I press the standby button. But the amplifier does not turn on, the LCD display does not light up. When you press the standby button again from the 15th to the 20th time, sometimes it is possible to turn on the amplifier. Previously, a similar thing happened after a long period of inactivity of the amplifier unplugged from the outlet. But after turning it on to the outlet and warming up in standby mode, everything seemed to return to normal, and the amplifier was turned on with the standby button the first time.
And now, after standing for 3-4 weeks (unplugged from the outlet), only from the 15th or 20th time.
Thanks.