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Coltul incepatorului Intreaba si afla ce vrei sa stii

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Old 17-10-06, 11:40   #1
steaua23
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Default zgomot ciudat ...

am observat o chestie ciudata la mine in masina de cateva zile: pun casetofonul pe "pauza", dau volumul la minim si totusi se aude un zgomot care vine de la woofer. m-am uitat in portbagaj si membrana se misca (are o cursa foarte mica, dar se simte).
ar mai fi de mentionat ca de cateva ori am auzit acelasi zgomot, insa mult mai puternic, cand ascultatm la volum foarte mic.
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Old 17-10-06, 12:10   #2
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Default Re: zgomot ciudat ...

bucla la masa
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Old 18-10-06, 14:12   #3
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Default Re: zgomot ciudat ...

Cand apare? Cu motorul oprit, pornit, sau indiferent?
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Old 18-10-06, 14:49   #4
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Default Re: zgomot ciudat ...

apare tot timpu. m-am uitat la cablu de masa ... nu avea bucla. dar era unpic indoi intr-un mod mai "urat".
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Old 18-10-06, 14:58   #5
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Default Re: zgomot ciudat ...

lol ... Cauta si tu pe net "ground loop" . Din ce am inteles eu e nevoie de niste curent alternativ, poate ma insel. Apare cand intre masele diferitelor echipamente exista o diferenta de potential (exista o masa imperfecta). Daca atat masa de la HU cat si cea de la amp. sunt binelegate la caroserie nu ar trebui sa apara.
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Old 18-10-06, 15:13   #6
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Default Re: zgomot ciudat ...

pai nu sunt montate chiar de curand ... au cateva luni.
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Old 18-10-06, 15:16   #7
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Default Re: zgomot ciudat ...

Verifica atunci toate conexiunile. Poate undeva a oxidat, s-a slabit. Mai departe asteapta raspunsuri de la specialisti.
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Old 18-10-06, 16:34   #8
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Default Re: zgomot ciudat ...

nu ... ideea e ca dupa ce am indreptat cablu de masa ... parca nu mai facea zgomot
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Old 18-10-06, 17:16   #9
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Default Re: zgomot ciudat ...

logic ca nu mai facea zgomot.
nu mai functiona ampul fara masa
ai grija ca undeva nu face contact calumea masa , parerea mea e ca acolo une e prinsul firul de masa s-a facut nitel oxid
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Old 18-10-06, 17:22   #10
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Default Re: zgomot ciudat ...

sa ma uit. masa e prinsa de un surub destul de gros.
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Old 19-10-06, 18:09   #11
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Default Re: zgomot ciudat ...

problema a devenit urmatoarea: cand trec peste o groapa ... sau o denivelare (sau ceva in care se misca putin masina) wooferul face un zgomot urat ...puternic. asta de la ce mai poate fi ?
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Old 19-10-06, 22:00   #12
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Default Re: zgomot ciudat ...

Daca e vre-un barait puternic de obicei se intampa cand se deconecteaza firul de semnal ... verifica daca sunt bine rca-urile prinse in spatele casului sau sa nu fie busit cablu rca si la anumite miscari sa faca ce zici tu.
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Old 20-10-06, 22:48   #13
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Default Re: zgomot ciudat ...

s-a rezolvat problema. faza era ca din cauza drumurilor bune (zic eu) mi-a sarit mufa de semnal din locul ei si se misca p'acolo ...
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Old 21-10-06, 03:44   #14
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Default Re: zgomot ciudat ...

ti-am zis eu
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Old 21-10-06, 10:36   #15
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Default Re: zgomot ciudat ...

dap . merci
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