Hi to all,

Request for a friend who has just acquired a Panasonic TR-425EU, a 5" B&W "popup" TV + AM/FM radio.
The TV is delivered with a 117V to 12V power supply and the PSU to TV cable has a proprietary Panasonic 6 contact connector.

Being in Europe, my friend plans to use an external 240VAC to 12V 2Amp power supply and therefore needs to know the wiring of the power cable.
(see photos).

He tried to find a schematic online, but has failed so far.
Would anyone have a SAMS or other lead for a schematic ?

Once the TV is powered, he plans on adding a direct Audio/Video input so once again will need the schematic.

Many Thanks ! in advance for any info on the PWR connector or schematic

Best Regards
jhalphen
Paris/France

There is no "AC" cord. The AC adaptor is a full wave bridge, unfiltered
putting out 15 V.

Holding cord with the key to the right we will number the pins

1 2 3
key
4 5 6

Use pins 2 & 5 pin 5 is POSITIVE
This assumes the US model is the same as the EU model.

73 Zeno:smoke:
LFOD !

Sams 1235-1

Hi to All,

Many Thanks ! to Zeno & Damen for your replies, i've passed on the info to my friend.

in case anyone is interested, Mannix54 on our french TV forum uploaded the full service data for the European version of the TR-425. it works on the 625 line CCIR B/G standard with 5.5 MHz FM audio.
37 pages in German :

https://we.tl/t-sv0aRjlek4

We're still interested in the service manual for the US version. My friend wants to add an A/V input for better image quality vs RF modulator input.


Best Regards
jhalphen
Paris/France

Hi to all,

Update on the Panasonic TR-425. The TV works well with an outboard 12VDC 2Amp stabilised power supply. After cleaning controls & switches, initial tests were done using RF input from a CCIR B/G generator & adjusting H & V hold controls for 625/50 operation.

Using the European version service manual, the appropriate locations were deduced to place the A/V baseband input.

2 RCA sockets were installed and a switch to select A/V or RF signal sources.
Photo shows location of TV/Video switch on Euro version schematic + rear panel with RCA female connectors.

TV now considered modified & operational. See a few snapshots below.
TV is on A/V input with a media player containing jpg files of vintage test patterns.

Thanks ! again for the help,

Best Regards
jhalphen
Paris/France

Excellent! Looks great. Thanks for sharing the progress and pictures.

Very nice!

Nice set.Looks like a brother of TR-535 set I've posted here. last summer .Had a comp A/V video input installed but I got rid of the connection when I did the overhaul on it last summer.There was no need to have a a/v hookup in the set now..