Hello everybody in Hungary,
I am looking for schematic diagram of portable player THOMSON TM9670.
When I connect an USB drive into the machine, the normal supply voltage 5.5V drops to approx. 2.0V in dependency of each usb drive. The player reports that no usb is connected.
I found out that power supply circuit comes from transistor D882L – from pin No.3 which is base pin. This doesn’t make any sense to me. I would expect it should be connected to collector or emitor pin. Therefore I need schematic diagram or service manual for this player.
Thank you in advance for any help.
Regards,
smith666
Sziasztok
Valami regi lomok kozott elokerult egy ilyen erosito:
paso T540 TR-S
Sosem hasznaltam, ugy kaptam valakitol, de nem nagyon figyeltem ra. A raragasztott cetli szerint "OK", de nem mertem bedugni, mert poros, paras, stb.
Mi a velemenyetek, erdemes-e azzal foglalkozni, hogy atnezzem, kitisztitsam, esetleg a kiszaradt elkokat kicsereljem, stb?
Regiseg, vagy csak ocskasag?
Az elkok szerint kb 1985 gyartmany.
Az allapota nagyon szep, es egyaltalan nem volt piszkalva.
Ket mikrofon es ket vonalbemenete van, de nagyon becsuletesen meg van epitve.
Ha valaki ismeri netan, akkor velemenyeket varok.
Minden jot,
Janos
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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