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Probleme newjomo pw-20b


Guest didiu

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Sunt "fericitul" posesor al acestui amplificator chinezesc (New Jomo PW-20B) din care pur si simplu a iesit fum.

A fost folosit odata pe saptamana la o biserica timp de vreo 5 ani cred, si niciodata peste 35 % din volumul lui general.

Avea si o pereche de boxe Eagle P602Q/SPA352 dual input 8 Ohm-100V System 25W RMS 8 ohm (taping 1,2,4,8,16 W Rms)

La o inspectie rapida am observat 4 rezistente complet arse de la etajul final respectiv prefinal.

Placa afectata este : DTAR303A

Am observat si o filtrare slaba : 2 perechi de 2 x 3300uF/50 V dar mai era loc de 1 pereche si 2 x Toshiba A1941 + 2 x Toshiba C5198 la fel a mai ramas loc de 2 perechi de tranzistori.

 

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Intreb daca are cineva schema acestui amplificator, daca ma poate ajuta la identificarea valorii rezistentelor, daca e din Oradea sau imprejuri care ar putea sa se ocupe de el contra cost bineinteles.

 

Multumesc

Edited by silent_light
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