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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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SONY VHS VCR SLV-SE730 NICAM DROPPING OUT
Hi
My last-ever VCR is a Sony SLV-SE730 and wouldn't you know it, just as I am about to transfer my last VHS's to DVD, the Nicam starts dropping out. Otherwise the VCR is in fine condition. Symptom: most of the time the audio plays as mono, but occasionally Nicam starts working, usually with faint repeated clicks in the background and a reduction in volume. I know its not the tapes themselves, since tapes that I previously transferred OK now show the problem. The audio head is clean and unworn. Looking at the circuit board, there are just a few all-in-one chips and no pots to for me to tweak. Does anyone have any ideas about what I can look at to fix this? Failing that, can anyone point me to a downloadable circuit diagram or service manual? Cheers, Marty |
#2
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SONY VHS VCR SLV-SE730 NICAM DROPPING OUT
"martinlith" wrote in message oups.com... Hi My last-ever VCR is a Sony SLV-SE730 and wouldn't you know it, just as I am about to transfer my last VHS's to DVD, the Nicam starts dropping out. Otherwise the VCR is in fine condition. Symptom: most of the time the audio plays as mono, but occasionally Nicam starts working, usually with faint repeated clicks in the background and a reduction in volume. I know its not the tapes themselves, since tapes that I previously transferred OK now show the problem. The audio head is clean and unworn. Looking at the circuit board, there are just a few all-in-one chips and no pots to for me to tweak. Does anyone have any ideas about what I can look at to fix this? Failing that, can anyone point me to a downloadable circuit diagram or service manual? Cheers, Marty its not nicam dropping out, its the hi fi audio track which is recorded within the video signal not the audio signal. try the tracking control dave |
#3
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SONY VHS VCR SLV-SE730 NICAM DROPPING OUT
On Sep 27, 7:42 pm, "Dave" wrote:
"martinlith" wrote in message oups.com... Hi My last-ever VCR is a Sony SLV-SE730 and wouldn't you know it, just as I am about to transfer my last VHS's to DVD, the Nicam starts dropping out. Otherwise the VCR is in fine condition. Symptom: most of the time the audio plays as mono, but occasionally Nicam starts working, usually with faint repeated clicks in the background and a reduction in volume. I know its not the tapes themselves, since tapes that I previously transferred OK now show the problem. The audio head is clean and unworn. Looking at the circuit board, there are just a few all-in-one chips and no pots to for me to tweak. Does anyone have any ideas about what I can look at to fix this? Failing that, can anyone point me to a downloadable circuit diagram or service manual? Cheers, Marty its not nicam dropping out, its the hi fi audio track which is recorded within the video signal not the audio signal. try the tracking control dave- Hide quoted text - - Show quoted text - Silly me, Dave is right of course about the NICAM track. However the video heads are good, picture playback is excellent and manual tracking adjustment doen't solve it. Any more ideas please? Cheers, Marty |
#4
Posted to sci.electronics.repair
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SONY VHS VCR SLV-SE730 NICAM DROPPING OUT
martinlith wrote:
On Sep 27, 7:42 pm, "Dave" wrote: "martinlith" wrote in message groups.com... Hi My last-ever VCR is a Sony SLV-SE730 and wouldn't you know it, just as I am about to transfer my last VHS's to DVD, the Nicam starts dropping out. Otherwise the VCR is in fine condition. Symptom: most of the time the audio plays as mono, but occasionally Nicam starts working, usually with faint repeated clicks in the background and a reduction in volume. I know its not the tapes themselves, since tapes that I previously transferred OK now show the problem. The audio head is clean and unworn. Looking at the circuit board, there are just a few all-in-one chips and no pots to for me to tweak. Does anyone have any ideas about what I can look at to fix this? Failing that, can anyone point me to a downloadable circuit diagram or service manual? Cheers, Marty its not nicam dropping out, its the hi fi audio track which is recorded within the video signal not the audio signal. try the tracking control dave- Hide quoted text - - Show quoted text - Silly me, Dave is right of course about the NICAM track. However the video heads are good, picture playback is excellent and manual tracking adjustment doen't solve it. Any more ideas please? Cheers, Marty The video heads may be good but the audio heads on the head drum can be dirty or worn. Start with a proper cleaning. |
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