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11ak57


ciuca paul

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Va salut.La acest sasiu am gasit sursa cu npc 1207ap pe care l- am schimbat cu mc44608p40 .Acum sursa  lucreaza in secundar cu o tensiune variabila intre 20 si 40 v in stnby anormal.Am verificat si celelalte componente de pe langa integrat dar la prima verificare n-am prea mai gasit nimic, suspect acum as vrea sa stiu a mai inlocuit cineva integr. respectiv cu MC-ul ca fiind perfect functional ,sau poate mai am si altceva nedescoperit prin zona respectiva?

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in unele cazuri cu tensiune mai mare in st-by am gasit elco 47uF/160V devalorizat , dar in cazul dvs cu sursa defecta mai verificati optocuplor , TL431 , etc

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Deci, exclus c.i.? Celelalte sunt masurate dar nu am schimbat tl431 care este smd ,sa vad cum il adaptez cu capsula cealalta

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