Service manuals, schematics, eproms for electrical technicians

MURPHY U 144 [SCH].

AUDIO - SERVICE MANUAL
Type: (DJVU)
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231.2 KB
Page
1
Category
AUDIO
SERVICE MANUAL
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    MURPHY 144 [SCH].
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Orion SE 260 jobb oldal melegszik
Sziasztok! Hozzám került a cimben szereplö szörnyeteg! Nem gyári állapotu, mert a toroid helyett hiperszil van benne amelynek emelt a tápfesze 42 volt. Müsorforrás nélkül kb 5 perc mulva langyos a jobb oldali végfok hütöbordája. Viszont müsorforrással szépen torzitásmentesen szol. Esetleg a nyugalmi árama lehet rossz? Emelt tápfesz nem okoz gondot? Letekert hangerönél semmi rendellenes zaj,illetve müsorforrás nélkül teljes hangerön sincs zaj. Valaki elkezdte modifikálni, de teljesen pozitiv irányba. üdv:atis
nordmende pa980
Sziasztok szereztem egy nordmende pa980 as erősitőt csak sajnos hiányos és ezért kapcsolási rajz kelene nekem hozzá. Ha valakinek megvan tölcse már fel. Előre is köszi
D3NO4H smd azonosítása.
Sziasztok! A fenti 8 lábú tokról szeretném megtudni mi lakozik benne. Egy autórádió tápjában leledzik, ebből arra következtetek, hogy valami fetek lehetnek benne. Azért jó lenne megbizonyosodni felőle. Köszönöm
May be useful - Harman Kardon information
For your information to repair Harman KArdon HD710 Player uses a KSS210B Pickup (as spare, original unknown) can be changed without any other servicing Harman Kardon Receivers; Series AVR 2000,3000... "Looses memory issue"- gold cap at the front pcb defective. May be changed to a 1µ cap but you have to solder 3 other elko´s to the other side. Keeps memory for a longer time. "Hum noise for the first 5min, warm up" - right lower side at the main pcb: elko 7800µ dead- you can see it at the "cap of it". Replace both (7800µ and 2200µ) to new versions above 25V. "Fuse burnt voltage selection; no green led´s flash, no sound"- cap 2200µ make a short circuit (next to 7800µ). Change these elkos! If you want to make it better... change the 7x 10µ caps for the regulators too. Resolder all points there. "volume changes self to max. or min." change the two resistors at the front pcb close to the volume encounter. be sure that there are both sides 5V! "everything is functional but no sound; but sound from the 6.1ch in" TC9273N-07 is dead (shorted). Have a look at the two caps and the security resistors beneath this chip! My be dead too. Replace this chip only by the -007 version. others will not function. Be careful with the bigger stripe cable! the contact lines are loosen from the plastics. You can help yourself with a "second glue" under these contacts. So i hope i can help you... cheers SG.
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