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Teletech 26715 - defecte frecvente

In jos

Teletech 26715 - defecte frecvente Empty Teletech 26715 - defecte frecvente

Mesaj Scris de Costin la data de Vin 11 Noi 2016 - 23:24

1.
Defect:
nu porneste; LED rosu pe panou; initial pornea mai greu.

Cauza: sursa 17PE15-9 defecta

Remediere: se vor verifica cu ESR-metru toti condensatorii electrolitici de pe placa; vor fi inlocuiti cei umflati, scursi, cu ESR mare; de obicei cei de capacitate mare se umfla, cei mici au doar ESR mare.
Inlocuirea tuturor condensatorilor electrolitici uscati rezolva, de obicei, defectul.

Acordati atentie si lipiturilor, mai ales la componentele care se incalzesc.

Costin
Costin
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Teletech 26715 - defecte frecvente Empty Re: Teletech 26715 - defecte frecvente

Mesaj Scris de Costin la data de Vin 11 Noi 2016 - 23:36

2.
Defect:
nu porneste, nu se aprinde LED-ul rosu de stand-by; utilizatorul reclama ca a iesit fum in timpul functionarii.

Cauza: in aceasta situatie a fost gasit un condensator clacat in sursa (17PW15-9) si siguranta de pe retea arsa.

[Trebuie sa fiti inscris si conectat pentru a vedea acest link]

Remediere: Se inlocuiesc componentele defecte si se verifica, preventiv, toti condensatorii de pe placa.
Costin
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