RUSSIAN VOSTOK-49 RADIO-GRAMO SCH
(GIF)78.3 KB
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AUDIO
SERVICE MANUAL
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RUSSIAN VOSTOK-49 VOSTOK49 RADIOGRAMO VOSTOK 49 RADIO GRAMO
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Sziasztok!
A címben említett erősítő tápja azt produkálja, hogy a STB 5V pulzál rajta, ha a front panel csatlakoztatva van, akkor a power led jól mutatja a jelenséget. Nem védelmi módban van, hanem tényleg mérve is, mászkál a táp folyamatosan 2-5V közt. Elkók esr-re, kapacitásra jók. TF91 trafó és az IC91 névre hallgató pwm contorller is jó. Aki esetleg javította ezt a kapcsolóüzemű tápot, adhatna pár tanácsot, mert ezekben nem nagyon vagyok otthon...
Köszönöm!
Üdv.: Viktor
A hibát az IC92 pwm kontroller okozta, de jól meg is szívatott mert rendeltem a HQ-tól, még szerencse, hogy 2 db-ot, persze amit elsőre beforrasztottam halott volt, és el vitte magával az IC91-et is. Mindkettő cseréje után a táp elindult.
Rengeteg meghajtó szíj (belt) mérete márka és típus szerint.
Az anyag végén a jelölések értelmezése.
http://russellind.com/client/download/PRB_Belt_XRef.pdf
Fel is töltöttem: https://elektrotanya.com/belt_xref.pdf/download.html
Guest
Hi,
I registered mostly to flag this issue :
- current database has this file
https://elektrotanya.com/polkaudio_psw10_sch.bmp/download.html
which is a completely unrelated schematic that is NOT for the PSW10.
- I uploaded a better schem :
https://elektrotanya.com/polk_psw10_schem.png/download.html
but currently it's (incorrectly) shown as a duplicate of another schem on this page:
https://elektrotanya.com/show_rawsch
Is it marked as a dup simply because the filesize matches ?
Best regards.
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