Tube ID - Videokarma.org TV - Video - Vintage Television & Radio Forums

		Videokarma.org TV - Video - Vintage Television & Radio Forums > Early B&W and Projection TV
Tube ID

Notices

Time to get this site upgraded, so we are passing the hat around. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html


	We appreciate your help in keeping this site going.

Thread Tools

Display Modes

04-02-2020, 02:42 PM

Electronic M Electronic M is offline

M is for Memory

Join Date: Jan 2011

Location: Pewaukee/Delafield Wi

Posts: 15,470

G1 is supposed to be 0V. It should have a 1M resistor connecting it to ground and it also has a cap connecting it to something. It sounds like G1 has become positive with respect to cathode in your set....that will give you 150% brightness regardless of brightness control setting on cathode.

Check the 1M resistor on CRT grid G1 for open and the cap that goes to G1 should be changed or disconnected.

__________________
Tom C.

Zenith: The quality stays in EVEN after the name falls off!
What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4

« Previous Thread | Next Thread »

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules

Forum Jump

All times are GMT -5. The time now is 02:59 AM.