Service manuals, schematics, eproms for electrical technicians

BBK 938S

VIDEO-DVD - EPROM
Type: (RAR)
Size
521.0byte
Page
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Category
VIDEO-DVD
EPROM
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    BBK 938S 938
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  • See related repair forum topics below. May be help you to repair.
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Relevant VIDEO-DVD forum topics:
Sony Sl-S770 vcr interrupted playback and AV display issues

I'm encountering an issue with my Super Betamax player. During playback, some cassettes abruptly stop playing at seemingly random points, accompanied by a sound similar to the one made when a tape reaches its end. This interruption also renders the rewind and forward buttons unresponsive. However, it does not impede the manual forwarding or rewinding of the cassette. The only solution seems to be ejecting the cassette and reinserting it. Occasionally, even this workaround fails, allowing only two seconds of playback before the problem recurs.

I sought guidance from the Mister Betamax troubleshooting page, which indicated that the tape safety device might be the root cause. I received additional advice suggesting that the issue could stem from one of the sensors within the VCR, possibly due to oxidized contacts causing intermittent operation. It was recommended to resolve this by carefully cleaning the contacts on the sensor switch responsible for detecting loaded tapes or the sensor that detects if the tape is "record-protected." Another suggestion was to monitor the output of these switches using an oscilloscope or voltmeter to determine if they are indeed the source of the problem.

I'm eager to hear if anyone has additional advice or personal experiences to share regarding this issue.

Additionally, I'm facing an AV cable problem where the yellow AV cable fails to display any video. While it used to work correctly, the AV audio cable still functions properly. As a temporary workaround, I've been using a coaxial cable and routing it through another VCR to utilize its AV output. However, I'm interested in exploring potential solutions to fix the issue with the yellow AV cable, if possible. Any insights or suggestions would be greatly appreciated.

Philips VR620/02 Video recorder fej hiba, (Fej egység rezonál, kikopott) (LEZÁRVA)
Sziasztok! A címben említett videóhoz keresnék fej egységet. Ha van ilyen valakinek kérem ossza meg velem! A hiba hogy a fej egységnek iszonyatos rezonáló hangja van. Megjárta már a szervizt is ott azzal adták vissza hogy megjavították. Hát mit ne mondjak csak ideiglenesen tünet mentesítették. Szét szedve és el indítva minden jól működik kivéve a videofej egységet. Hang van, videó jel is fel sejlik, 95%-ban zavar jeles, ez abból adódik hogy a fej nem stabil, hanem össze vissza kileng. Ezért ejteném meg a cseréjét. Ha van ilyen valakinek kérem írjon egy ajánlatot ide,vagy PM-be! A segítségeteket előre is köszönöm! Adattábla Nem kérik a készülék javítását. Időközben kapott a hölgy egy másik készüléket. Így a téma értelmét veszítette. Mindenkinek köszönöm a segítségét és a hozzá szólását. Üdv Istva78
SHARP VC-A105 mindig kidobja a kazettát
A fent említett videomagnó mindig kidobja a kazettát. Beteszem, leviszi, aztán fel és kidobja. Ebben kérnék segítséget. Köszönöm 
SCART - HDMI konverternél nincs kép, csak hang van
Tisztelt Fórumtársak!
A probléma: 
SCART-HDMI konverter - persze kínai :) csak hangot produkál, kép nincs. Kipróbáltam 2 különböző lejátszóval, 2 különböző SCART, és 2 különböző HDMI kábellel, az eredmény mindig ugyanaz. A lejátszók kimenetét is változtattam RGB-re, ez sem oldotta meg a problémát.
Ötlet? 
Előre is köszönöm a segítséget.
 
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