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invertor sudura Straus st/wd-250iv

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Am gasit integratul uc3842b si cateva componente pasive arse.Va rog  ajutati-ma cu o schema a invertorului.Multumesc.

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La 16.02.2016 la 21:22, but a spus:

Am gasit integratul uc3842b si cateva componente pasive arse.Va rog  ajutati-ma cu o schema a invertorului.Multumesc.

Ati reușit  cumva să  faceți  rost de schemă? Mi-ar trebui-o și  mie. Numai bine!

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Salutare! Schema aparatului ARC160 este foarte similara cu a aparatului Straus ST/WD-250IV. Am reusit sa-l repar pe al meu folosind aceasta schema.. este peste tot pe net. Daca cumva se intampla sa aveti aceeasi problema ca a mea cu aparatul, mai exact nu afisa nimic, nu functiona decat ventilatorul la pornire (lipsea tensiunea de 24V), atunci luati jos PCB-ul mic MK2 de pe placa principala, si inlocuiti/verificati urmatoarele piese: Q1 (singurul tranzistor de pe placuta), D5 - dioda Zenner de 8V2, R7 - 2R2; Pb la mine a fost D5 si R7 de pe placa MK2. Numai bine!

Straus 250IV.jpg

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