National Panasonic NV-7500 - UK Vintage Radio Repair and Restoration Discussion Forum

dj_fivos_sak · 15th Sep 2015, 1:29 am

I need some help with this VCR. It is a multi system (PAL, SECAM, NTSC) model from 1981. The first probem I have is that when playing back a PAL tape, the picture is black and white. When I play a SECAM tape the picture has good colour picture. Secondly, this machine looks like it has servo problems with the drum and capstan servo during record mode. When I record a tape on it, the head drum spins too fast and the capstan speed is very unstable. Can someone give me an advice? Maybe I have to recap the power supply and servo/chroma/luminance boards? I have the service manuals for the models NV-7200 and 7800 which are PAL-only machines.

Fivos

vidjoman · 15th Sep 2015, 8:54 am

Also depends on the TV it's played into. If that is set to SECAM then a pal output from the VCR will show as B & W. Some VCR's & TV's only work in one system via the VCR aerial output but other systems via a scart or RGB input

dj_fivos_sak · 15th Sep 2015, 12:09 pm

My TV set supports all systems. I have tried it on 2 sets. A 2008 Samsung CRT and a 2010 Toshiba Regza LCD...

Maarten · 18th Sep 2015, 1:26 am

Quote:

1981

Actually this example was made in january 1983. The model may have been from 1981, though.

dj_fivos_sak · 18th Sep 2015, 5:47 pm

How do you know it? Can you read the serial number?

15th Sep 2015, 1:29 am	#1
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	National Panasonic NV-7500 I need some help with this VCR. It is a multi system (PAL, SECAM, NTSC) model from 1981. The first probem I have is that when playing back a PAL tape, the picture is black and white. When I play a SECAM tape the picture has good colour picture. Secondly, this machine looks like it has servo problems with the drum and capstan servo during record mode. When I record a tape on it, the head drum spins too fast and the capstan speed is very unstable. Can someone give me an advice? Maybe I have to recap the power supply and servo/chroma/luminance boards? I have the service manuals for the models NV-7200 and 7800 which are PAL-only machines. Fivos Attached Thumbnails

15th Sep 2015, 8:54 am	#2
vidjoman Dekatron Join Date: Jun 2013 Location: East Sussex, UK. Posts: 3,327	Re: National Panasonic NV-7500 Also depends on the TV it's played into. If that is set to SECAM then a pal output from the VCR will show as B & W. Some VCR's & TV's only work in one system via the VCR aerial output but other systems via a scart or RGB input

15th Sep 2015, 12:09 pm	#3
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: National Panasonic NV-7500 My TV set supports all systems. I have tried it on 2 sets. A 2008 Samsung CRT and a 2010 Toshiba Regza LCD...

18th Sep 2015, 5:47 pm	#5
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: National Panasonic NV-7500 How do you know it? Can you read the serial number?