Service manuals, schematics, eproms for electrical technicians
HALLICRAFTERS S-36 RECEIVER 27,8 TO 143 MHZ.
Type: 
(DJVU)
(DJVU)Size
785.5 KB
785.5 KB
Page
8
8
Category
OTHER
SERVICE MANUAL
OTHER
SERVICE MANUAL
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Good luck to the repair!
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S-36 S36 RECEIVER 27 TO 143 MHZ. 36
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Mire használható, és kell-e valakinek, valamiért?
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Egy kicsit rendbe raktam a linkeket.
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?
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?
Üdv
Van egy AHD-100 CICX PVR olcsó tv beltéri aminek nincs képe, de a menüt megnyomva az alap háttérkép bejön, Óra megy. Van e valami reset gombkombináció, vagy olyan firmvare amit usb-re rakva alapra lehetne hozni. Valószínű el van állítva.
Köszi Laci
Sziasztok!
Egy Pioneer RVD-XG10 tipusú projector került hozzám javitásra.Semmijen életjelet nem ad ,valoszinű táphibás.Sajnos a tápot már láthatóan javitották és egy kicsit át is alakitották. Kérem ,hogy akinek van esetleg rajza erröl a készülékről vagy csak a tápról ossza meg velem. Köszönöm!
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