Pin out for JVC modular PM58054M - UK Vintage Radio Repair and Restoration Discussion Forum

delaitt · 23rd Jan 2021, 3:38 pm

Hello

I have a JVC modulator PM58054M part and would like to find out which pin if which for connecting it. I dont have the VCR and would like to use the modulator for connecting it to a French 625 line TV

here are some photos

It seems to have 2 integrated circuits. These circuits are probably well know but as the ICs are adjacent to other circuitry it is not possible to read the model number of the ICs

I want to make sure i apply the voltage to the correct pin to avoid blowing up the ICs. It would also be good to know what voltage to apply. If i know the pin number for the voltage i can probably work out the other pins.

Thanks

Thierry

toshiba tony · 23rd Jan 2021, 4:58 pm

I have a lot of JVC manuals, it should be easy to find pin outs from that, I don't recognise that modulator but by looking at the manual it would make it a doddle.

toshiba tony · 23rd Jan 2021, 5:01 pm

Normally they work on 5v, but can't you extract video and audio from the appropriate sockets?

delaitt · 23rd Jan 2021, 6:00 pm

Thanks. I've just found some written characters hidden below the connector. AGVBGB !!

It seems to work best on 8/9 v

Thanks

Thierry

jayceebee · 23rd Jan 2021, 9:03 pm

Here you go. That style of modulator with slight changes was used in a large number of JVC machines and their clones in the UK. I encountered them in the Ferguson 3V44 onwards up to early FVxx models.

Do you know where the modulator came from? If it's from a UK machine it's output will be PAL-I and will not be of much use with a French SECAM-L TV unless it's a multistandard set. Googleing that part number didn't bring up any results. PU58054M does bring up a couple of hits but I can't tell what system they're for.

John

delaitt · 23rd Jan 2021, 9:41 pm

excellent, thank you. Found it in France to repair a French TV in the UK

Thierry

patrickgnl · 11th Feb 2021, 4:18 pm

I am sure you enjoy the challenge, but its not that difficult to find a multistandard (including Secam-L) modulator these days. Heres an example at CPC

23rd Jan 2021, 3:38 pm	#1
delaitt Pentode Join Date: Jul 2005 Location: London, UK. Posts: 177	Pin out for JVC modular PM58054M Hello I have a JVC modulator PM58054M part and would like to find out which pin if which for connecting it. I dont have the VCR and would like to use the modulator for connecting it to a French 625 line TV here are some photos It seems to have 2 integrated circuits. These circuits are probably well know but as the ICs are adjacent to other circuitry it is not possible to read the model number of the ICs I want to make sure i apply the voltage to the correct pin to avoid blowing up the ICs. It would also be good to know what voltage to apply. If i know the pin number for the voltage i can probably work out the other pins. Thanks Thierry Attached Thumbnails __________________ BVWS Member.

23rd Jan 2021, 4:58 pm	#2
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 939	Re: Pin out for JVC modular PM58054M I have a lot of JVC manuals, it should be easy to find pin outs from that, I don't recognise that modulator but by looking at the manual it would make it a doddle.

23rd Jan 2021, 5:01 pm	#3
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 939	Re: Pin out for JVC modular PM58054M Normally they work on 5v, but can't you extract video and audio from the appropriate sockets?

23rd Jan 2021, 6:00 pm	#4
delaitt Pentode Join Date: Jul 2005 Location: London, UK. Posts: 177	Re: Pin out for JVC modular PM58054M Thanks. I've just found some written characters hidden below the connector. AGVBGB !! It seems to work best on 8/9 v Thanks Thierry __________________ BVWS Member.

23rd Jan 2021, 9:03 pm	#5
jayceebee Heptode Join Date: Jun 2007 Location: Durham, County Durham, UK. Posts: 613	Re: Pin out for JVC modular PM58054M Here you go. That style of modulator with slight changes was used in a large number of JVC machines and their clones in the UK. I encountered them in the Ferguson 3V44 onwards up to early FVxx models. Do you know where the modulator came from? If it's from a UK machine it's output will be PAL-I and will not be of much use with a French SECAM-L TV unless it's a multistandard set. Googleing that part number didn't bring up any results. PU58054M does bring up a couple of hits but I can't tell what system they're for. John Attached Thumbnails Last edited by jayceebee; 23rd Jan 2021 at 9:23 pm. Reason: PU version of part number info

23rd Jan 2021, 9:41 pm	#6
delaitt Pentode Join Date: Jul 2005 Location: London, UK. Posts: 177	Re: Pin out for JVC modular PM58054M excellent, thank you. Found it in France to repair a French TV in the UK Thierry __________________ BVWS Member.

11th Feb 2021, 4:18 pm	#7
patrickgnl Pentode Join Date: Jun 2016 Location: Stourbridge, West Midlands, UK. Posts: 107	Re: Pin out for JVC modular PM58054M I am sure you enjoy the challenge, but its not that difficult to find a multistandard (including Secam-L) modulator these days. Heres an example at CPC