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ROBEERT

Digital video recorder Philips model DVDR7300H/19

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Buna seara stimati colegi. O sa pun niste poze cu acest aparat. Defectul s-ar parea ca este pe sursa la acest aparat. Ce-i drept, nu prea am avut timp sa fac asa multe investigatii la aceasta sursa, dar ce am observat: oscilatorul functioneaza ( am p-acolo niste tensiuni pe redresarile secundare ), dar s-ar parea ca lipseste tensiunea de veghe ( de standby ). Asa s-ar parea. Aceasta s-ar parea ca se face cu niste convertoare DC / DC. Am vazut eu cat am avut timp p-acolo pe partea placata trei integrate cu 2X4 pini care banuiesc ca sunt ori convertoarele sus amintite, ori niste mosfeturi si s-ar parea sa fie pe tensiunea de standby ( cel putin unul din ele ). In seara asta nu prea sunt cu lectia invatata, dar cu prima ocazie cand iau iarasi aceasta sursa " la intrebari ", explic mai concret ce si cum. Pun in attach niste poze, in special cu sursa.

 

Acum dupa cele spuse, rog poate are cineva schema acestei surse. Am gasit pe net service manualul acestui aparat, dar vechea poveste: lipseste schema sursei. Manualul service contine cca. 194 pagini ( vedeti linkul urmator ): https://elektrotanya.com/philips_dvdr5350_dvdr7310h_dvdr7300h_sm.pdf/download.html

 

Poza exemplificativa a aparatului este aici: https://www.google.com/search?q=DVDR7310H&rlz=1C1CHMO_roRO893RO893&sxsrf=ALeKk02KCD8i6tpnHo7MxxhYIhAlfTXWEw:1608151551071&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj678ivr9PtAhXR-yoKHfwxCmIQ_AUoAXoECAQQAw&biw=1152&bih=721

 

Multumesc.

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Edited by ROBEERT
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