Replacement CRT for the Ekco TS105 - UK Vintage Radio Repair and Restoration Discussion Forum

FERNSEH · 9th Jan 2006, 4:49 pm

The original CRM92 in my Ekco TS105 is useless.
I acquired the set last year and experieced some problems with RF section, it turned out that the receiver is a TRF tuned to Birmingham frequencies.
There is indication on the back cover that the set tunes to channel B4

So the set must a TS1105.

I'm going to try an unused Mazda CRM93. I know that this tube is a 9KV tetrode and has a 12.6volt heater. It has a ion trap so some fiddling about with the rear CRT support will be necessary.

I'll report how the CRT replacement goes.

DFWB

FERNSEH · 9th Jan 2006, 11:46 pm

I've fitted the CRM93 into the Ekco TS105. The raster is bight enough but as expected the focus is bad. The TS105 has permament focus magnets.

DFWB

9th Jan 2006, 4:49 pm	#1
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Replacement CRT for the Ekco TS105 The original CRM92 in my Ekco TS105 is useless. I acquired the set last year and experieced some problems with RF section, it turned out that the receiver is a TRF tuned to Birmingham frequencies. There is indication on the back cover that the set tunes to channel B4 So the set must a TS1105. I'm going to try an unused Mazda CRM93. I know that this tube is a 9KV tetrode and has a 12.6volt heater. It has a ion trap so some fiddling about with the rear CRT support will be necessary. I'll report how the CRT replacement goes. DFWB

9th Jan 2006, 11:46 pm	#2
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Replacement CRT for the Ekco TS105 I've fitted the CRM93 into the Ekco TS105. The raster is bight enough but as expected the focus is bad. The TS105 has permament focus magnets. DFWB