CRT:PVM-4300

PVM-4300
KX-45ED1
KX-45ED1T
Information
Manufacturer	Sony
Type	Professional
Tube Series	Trinitron
Size	43"
TV Lines	600-650
Dot Pitch	?
Regions	NTSC
240p/480i	Yes
480p	Yes
720p	No
1080i	No
1080p	No
Vsync	60Hz
Widescreen	No
RF	?
Composite	3
S-Video	3
Component	PVM-4300: ; 1x RGBHV/RGBS/RGsB BNC (15kHz), ; 1x RGBHV/RGBS/RGsB BNC (31kHz) ; KX-45ED1: ; 1x RGBS JP21 (15kHz), ; 1x RGBHV/RGBS BNC (31kHz)
SDI	0
HD-SDI	0
HDMI	0
Audio Input	4x RCA, 1x audio terminal
Weight	440lb, 15oz
Links
Chassis	?
Remote	RM-778
Operation Manual	PVM-4300 Operation Manual ; KX-45ED1 Operating Instructions
Service Bulletins	DP92-0080
Brochure	PVM-4300 Brochure

The Sony PVM-4300, also known as the KX-45ED1, is presumably the largest direct-view CRT display ever produced. Launched in 1989 as a "limited edition" model for the Trinitron's 20th anniversary, the KX-45ED1 retailed at 2,430,000 Yen (roughly $17,500 at 1989 exchange rate). There was also a variant with a built-in VT-X5R tuner, KX-45ED1T, which retailed at 2,520,000 Yen (roughly $18,000 USD at 1989 exchange rate). The PVM-4300 was reported to have been sold for $40,000 USD in the United States in 1990.

It is an example of an "IDTV" (Improved Definition TV), which uses digital circuitry to deinterlace 480i NTSC video signals to 480p. This was meant to reduce eye-straining flicker and improve image clarity on large size screens. In Japan, Sony called this "Digital Frame Memory TV". It includes two RGB inputs. The first one is for 15kHz (480i) signals. The second one is for 31kHz (480p) signals and bypasses the digital up-conversion circuitry.

There was also a similar 29" model released in Japan, the KV-29ED1. However this model lacks a 31kHz RGB input.

Rarity

The single known serial number, 2000103, indicates that it was likely the 103rd unit produced. It is unknown how many survive today, but the number produced is extremely low as they were extremely expensive, hand-made units. The PVM-4300 is also rumored to have been the huge TV featured in the movie "Camp Nowhere", though this rumor is false as it appears to be a rear projection unit in the movie.

While there are rumors that Panasonic (Matsushita back then) had experimented with 43 or 45-inch tubes, it's likely it never went past the experimental stage as there are no pictures of an assembled unit or reference to it ever being sold, making this the largest confirmed direct view CRT ever sold.

Until 12/2024 there were only ever two public photos of the PVM-4300 available outside of advertisements.

A KX-45ED1 spotted in the soba noodle restaurant "Chikuma" in Osaka, Japan prior to the rescue by ShankMods and demolition of the building
Image of unknown source

The below video covers the story of ShankMods' rescue of a KX-45ED1:

Boards

Part number	Board
A-1135-616-А	B Board
A-1135-608-A	B2 Board
A-1330-940-A	C Board
A-1345-829-A	D1 Board
A-1345-897-A	D2 Board
A-1345-827-A	D3 Board
A-1345-828-A	D4 Board
1-631-899-21	D5 Board
1-629-060-21	F1 Board
1-629-061-21	F2 Board
1-413-419-12	G1 Board (SWITCHING REGULATOR 2D-111)
1-413-420-13	G2 Board (SWITCHING REGULATOR 2D-112)
1-629-054-11	H1 Board
1-629-055-11	H2 Board
1-629-056-11	H3 Board
A-1306-395-A	M Board
A-1195-032-A	P1 Board
1-629-063-11	P2 Board
A-1373-212-A	U Board
1-629-049-11	V Board