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Costin (4687)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
titus08 (1660)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
Florinel TV (729)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
stanley (728)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
Bughiu (636)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
fox (368)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
petriangabor (228)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
ionica68 (160)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
necula.vasile (159)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
coconut (114)
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 

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cata090
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
titus08
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
Costin
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
fox
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 
cristiiliut
Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_lcapBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_voting_barBeko model 21B5T29-SX, sasiu 12.3 - defecte frecvente I_vote_rcap 

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Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente

In jos

Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente Empty Beko model 21B5T29-SX, sasiu 12.3 - defecte frecvente

Mesaj Scris de Costin Sam 2 Mar 2013 - 16:01

Televizor Beko 21", model 21B5T29-SX, sasiu 12.3

1.
Defect:
dupa comanda de pornire apare si dispare rastrul aleatoriu.

Televizorul ajunge in service dupa ce a fost chinuit (multe exfoleieri) de un meserias la domiciliul clientului. Singura zona care a ramas neexplorata, nelipita, fiind modulul stereo.

La o prima vedere, dispar impulsurile de linii, comanda procesorului ramanand ON.
Tensiunile de alimentare fiind corecte, am crezut ca apare o avarie care blocheaza impulsurile H, asa ca am procedat la fortarea junglei, prin eliminarea protectiilor (pin 49 la masa, pin 46 in aer).

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

Cum defectul a persistat, am monitorizat tensiunile de alimentare ale junglei (+5V si +8V) si astfel am vazut ca tensiunea +5VB disparea aleatoriu.
Aceasta tensiune se obtine din +8V cu ajutorul unui stabilizator serie realizat cu T950, care avea joctiunea B-E defecta.

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

Recomand folosirea unui tranzistor cu performante superioare din seria BD (BD135, 137, 139).
Costin
Costin
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