Service manuals, schematics, eproms for electrical technicians


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PIONEER DV-220KV-K RRV3981 service manual (1st page)
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  • Also known:
    PIONEER DV-220KVK RRV-3981 DV220KVK RRV3981 DV 220 KVK RRV 3981 220KV DV-220KV-K
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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.

Sziasztok ! Szükkségem lenne doksira mert a tápban van egy törött dióda és passzolom a típusát.Ez a kissebbik baj. :)A fő ok az hogy bekapcsolt állapotban nehezen jön elö az OSD. Be be villan mikor indítja a kazit befűzi szépen és teker is.Viszont se hang se kép se Osd.Kazi ki akkor kiírja nincs kazetta.Magyarúl visszajön az Osd !!!Még nem volt ilyen hibám evvel a típussal.Valakinek van 5 lete ?? Köszi elöre is !
Panasonic NV-FS90 nincs hang és nem megy a számláló MEGOLDÓDOTT!!

Üdv mindenkinek!
Kaptam egy NV-FS90 SVHS videomagnót, gyönyörű állapotban. A probléma az, hogy kissé moarés a kép, nincs hang és nem megy a számláló. Ha pillanat álljal megállítom, 1-2 másodpercig van hang, de a számláló akkor sem megy. Átnéztem a tápegységet , kicseréltem a kondenzátorokat, de az eredmény ugyan az.

Merre felé induljak el a hibakereséssel?


Panasonic NV-HV/60 Display minden szegmense kigyullad,aztán minden sötét.
75.szülinapomon a videóm azzal lepett meg, hogy a kijelző minden szegmense kigyulladt,majd minden sötét lett. A rossz nyelvek szerint ez táp kondi hiba. Sajnos mindenképp segítségre szorulok,mert újabban már ágyhoz köt a betegségem :help: besi99
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