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SAMSON ETM-9C AND ETM-9COG ELECTRONIC KEYERS

OTHER - SERVICE MANUAL
Type: (PDF)
Size
2.1 MB
Page
40
Category
OTHER
SERVICE MANUAL
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  • Also known:
    SAMSON ETM-9C AND ETM-9COG ELECTRONIC KEYERS ETM9C ETM9COG ETM COG 9C 9COG
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  • See related repair forum topics below. May be help you to repair.
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Relevant OTHER forum topics:
Battery charger with EM78P41 IC
Working on a speed charge battery maintainer for small engines battery. Heat sink had (2) S2025R T0-220 type components on it. Seems they are an SCR and I have 57 ohms on 1 and 3 pin, so seem they are short. Cant get these anymore but installed S4025R which seems to be better replacement. Before replacing, heat sink seemed to be really hot after replacng on on 
board 10 amp automotive slot type fuse, so seemed these SCR were bad, getting hot woth no load.

Standby LED not lighting with new SCR's installed. Old ones did not have heat sink compound on them, so I used some to better transfer heat. I saw the input of the 7805 1 amp
regulator IC has short, so removed it, and its not shorted, but the feed to it comes from the IC chip on board, a EM78P41 BWD20J. Data sheet for EM78P41 is online. They have pin 16 going to pin 1 of the 7805 regulator. Actual reading on pin 16 to ground is 2.5 ohms. I suspect this IC is shorted output. Is there chance to replace IC or is this repair finished?
Play Station 2 kontroller, fólia fémréteg szakadás
Üdvözlet kedves kollégák! Van nekem néhány régi PS2 kontrollerem amit szeretnék megjavítani. A hibája szinte mindegyiknek ugyan az, egy bizonyos fémgőzölt fólia csík megszakadása ami miatt egyik gomb (lefelé kurzor gomb) nem működik. A megoldásra láttam hogy árulnak az ebay-en hozzá komplett fóliát, de szerintem nagyon könnyen javítható lenne ha tudnátok ajánlani valami ragasztót ami vezeti az áramot. Úgy szeretném megoldani hogy a kérdéses szegmenshez ragasztanék egy fémszálat és ezt közvetlen a panelra forrasztanám ahová eredetileg csatlakozott. Tudtok-e ilyen ragasztót ajánlani nekem? Köszönöm a segítséget! Üdv! 
SMD tranzisztor azonositása
Sziasztok. Nem tudná valaki megmondani, hogy mi lehet ez a jelzés? smd tranzisztoron. Áramkor szerint NPN
RBSports FIT 3001 futógép motorvezérlő/ táp panel alkatrész beazonosítás.
Sziasztok!

Kedves kollégák!
A fent nevezett futógép motorvezérlő/táp panelen lévő alkatrészek beazonosításában kérnék segítséget.
A gép felső kezelő elektronikájába belefojt valami, valószínű ez okozta a táp meghibásodását.
a felső kezelőpanel az alsó motorvezérlő paneltől kap tápot.
A nagy táp kondi alatti alkatrészek, U2 fesz.stab ic, C14, C18, C35, stb. kondenzátorok, ill. a még ott lévő pár dióda, ellenállás,
elhaláloztak.
Elsősorban az smd kondenzátorok értékeinek beazonosításában kérnék segítséget.

Köszönöm!
gyulends1
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