Wanted ! 7DP4 B&W CRT

[jhalphen]

Hello Gentlemen,

An RCA 621TS TV i purchased at ETF 2011 was recently restored. In spite of all normal CRT electrode voltages and a healthy 7KV EHT, no raster.

The ion trap magnets were photographed to memorize the original position then tweaked in all 4 quadrants: still not the slightest hint of brightness.

I think the CRT is toast, will try to check with a Leader CRT tester/rejuvenator before giving up. I hope it has an adequate connector for this antique.

In the meantime, i am initiating research on a working 7DP4 CRT.

Rare or common?

Recommended substitute? - with or without modifications?

Anyone got an operational tube for sale? - PM please, including shipping cost from USA to Paris/france & payment method (PayPal ?)

Thanks! in advance for any help,

Best Regards

jhalphen
Paris/France