Featured
Latest
And Yet Another Ekc...
 
Share:
Notifications
Clear all

Forum 135

And Yet Another Ekco TMB272

146 Posts
13 Users
0 Reactions
7,735 Views
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi all,

A couple of years ago I restored an Ekco TMB272  http://www.forum.radios-tv.co.uk/viewtopic.php?f=5&t=6972&hilit=+ekco+tmb272 which has turned out to be a good reliable little telly then by chance a while ago I found another one of these little monsters at a farm in North Yorkshire and for a fiver I thought it would make a good source of spares, it even has it's original McMurdo mains lead with it !

It's now been sat on a shelf in my workshop for 18 months drying out from it's spell in a barn, it looks fair on the outside but not so good on the in. Rust has formed round the base of the chassis and 'Daz' has appeared on the alloy bits also most of the waxys have decade or split wide open plus there are tons of 'orible 'unts to deal with, a couple of valves are missing but the CRT tests to be a corker so I think it's worth a shot at getting it going.

Marc.

DSCF3810-Medium.JPGDSCF3809-Medium.JPGDSCF3808-Medium.JPGDSCF3811-Medium.JPGDSCF3812-Medium.JPGDSCF3807-Medium.JPG

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 07/10/2016 8:46 pm
crustytv
(@crustytv)
Posts: 12424
Vrat Founder Admin
 

When I collected 405 sets the TMB-272 was high on my list of wants, I never managed to find one at a reasonable price though. The fact you found one for a fiver is amazing!! either you were very lucky or the bottom has continued to fall out of the 405 set market.

look forward to your repair report and as you rightly say the CRT is going to be a corker. Looking at the internals makes me realise I've been spoilt working on PCB sets, I'd forgotten just how much of a rats nest hard wired sets are, I certainly don't miss all those sticky hunts wink

CrustyTV Television Shop: Take a virtual tour
Crusty's TV/VCR Collection: View my collection
Crustys Youtube Channel: My stuff
Crusty's 70s Lounge: Take a peek

 
Posted : 07/10/2016 9:02 pm
Katie Bush
(@katie-bush)
Posts: 4881
Famed Member Registered
 

Flippin' heck, Marc, I was expecting a right old dog of set from your description.. That's quite a tidy thing really, and well worth a go - even that LOPT looks like it's almost new!

Granted, you don't often find (well, I don't) waxies all split open like that.. I bet they read a bit leaky?..grin_gifinnocent

 
Posted : 07/10/2016 9:06 pm
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi Chris, Marion and all.

Chris, I was just very lucky with the price of this set, since getting mine I've seen them fetching £100+ if they have their correct mains lead. As for the 'rats nest' well, you just don't know what you're missing ! wink

Marion, the photo's do make the chassis look better than it really is, it's not a basket case by any means but no looker either compared with others I've seen.

After looking a little closer at the set I've found the combined 'on/off, volume, brightness' control is seized solid so I've left the shafts soaking in WD40, I'll try working it free tomorrow. The missing valves are EL81 & EY81 which typically I can't find in my stores....PL & PY how many do you want but EL & EY duno_gif

Marc.

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 07/10/2016 9:35 pm
Katie Bush
(@katie-bush)
Posts: 4881
Famed Member Registered
 

No promises here, but I might just have one of those valves in my box of "ex equipment" valves.. I'll have a quick scan when I can, and let you know.. If you're extremely lucky, I might have both, but if you can find them elsewhere, grab them anyway.

 
Posted : 07/10/2016 10:06 pm
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi Marion,

If I can't find any valves in the 'other' stores tomorrow I'll pop a wanted ad on the forum anyway as I need 'both' valves. I could borrow the valves from my other TMB272 to get this one up and running at a push.

Marc.

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 07/10/2016 10:10 pm
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi all,

I've not managed a lot of time on the Ekco today but bathing the volume/brightness pot shaft with WD40 has done the trick, it turns nicely now for both functions....but (isn't there always one) the on/off doesn't work and is o/c on both poles.

I removed the pot from the set and began to take it apart, bending back the securing tags to remove the switch section and finally drilling out the rivets to get inside the switch which revealed the spring has completely rotted away. Searching through my stores I found another 'Morganite' switch pot and took that apart to rob the switch from only to find that that switch had also suffered the same rotted spring fate !....Anyone got a switch pot going spare ????

DSCF3814-Medium.JPGDSCF3815-Medium.JPGDSCF3818-Medium.JPGDSCF3819-Medium.JPGDSCF3819-Medium-1.JPGThe last photo shows the remains of the hairpin spring as a lump of rust right in the  middle.

Marc. 

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 08/10/2016 10:11 pm
PYE625
(@pye625)
Posts: 5114
Famed Member Registered
 

Hi Marc, in my box of used and dismantled pots, I have a Morganite Type V switch section. It looks exactly like your broken switch and is yours if you want it FOC.

Just PM your details, and I'll post it to you smile

Andrew

 

rsz_img_2321.jpg

 

rsz_img_2320.jpg

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 08/10/2016 11:18 pm
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi Andrew,

You're a life saver !thumb_gif PM on it's way.

Marc.

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 08/10/2016 11:33 pm
Brian Cuff
(@briancuff)
Posts: 2063
Member Rest in Peace
 

Hi marc

I can let you have the EL81 and EY81. I'll get them in 1st class post today for you. foc.

Forum Memorial

 
Posted : 10/10/2016 6:26 am
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Brian Cuff said
Hi marc

I can let you have the EL81 and EY81. I'll get them in 1st class post today for you. foc.  

Hi Brian,

Thanks very much indeed, I spent a good deal of time yesterday sifting through my stock of valves only to turn up with a few dozen PL & PY with not a sniff of any E series At all.

PM on it's way.

Marc. 

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 10/10/2016 12:07 pm
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi all,

Not a lot to report today but whilst I'm waiting for the very kindly donated parts to arrive (cheers Andrew & Brian) I thought I would take a look at the split and rotten wax caps and as it turned out they were either fully O/C or dead short so the lot of them will be replaced well before this little Ekco gets a sniff of any volts. There are also lots of the dreaded 'orible 'unts where the lead out wires have dropped off ! so again all these will have to be replaced.

Marc.

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 10/10/2016 10:31 pm
Brian Cuff
(@briancuff)
Posts: 2063
Member Rest in Peace
 

Hi Marc.  I have found two NOS EL81s for you and they will be posted today but the only EY81 I had was a dead as a Dodo! I will post the EL81s today but unfortunately I have to say no can do to the EY81s. Sorry for my mistake and the potential delay caused!

Forum Memorial

 
Posted : 11/10/2016 8:07 am
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Brian Cuff said
Hi Marc.  I have found two NOS EL81s for you and they will be posted today but the only EY81 I had was a dead as a Dodo! I will post the EL81s today but unfortunately I have to say no can do to the EY81s. Sorry for my mistake and the potential delay caused!  

Hi Brian,

No worries, one missing is better than both. smile At least for the purpose of testing I can borrow an EY81 out of my other Ekco.

Cheers,

Marc.

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 11/10/2016 11:36 am
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

Hi Andrew & Brian,

The switch and the valves both arrived safely this morning so many thanks to both of you for helping out with this project. thumb_gif

Marc.

DSCF3820-Medium.JPG

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 12/10/2016 11:20 am
PYE625
(@pye625)
Posts: 5114
Famed Member Registered
 

Hi Marc, pleased that the switch arrived safely smile

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 12/10/2016 6:04 pm
sideband
(@sideband)
Posts: 4274
Famed Member Moderator
 

Brian Cuff said
I have to say no can do to the EY81s.  

I have some of those 'E' series TV valves. I'll have a look to see if there is an EY81 amongst them.

 
Posted : 12/10/2016 8:49 pm
Marc
 Marc
(@marc)
Posts: 2750
Noble Member Registered
Topic starter
 

sideband said

I have some of those 'E' series TV valves. I'll have a look to see if there is an EY81 amongst them.  

Cheers Rich, I'll keep my fingers crossed.

Marc.

Marc
BVWS member
RSGB call sign 2E0VTN

 
Posted : 13/10/2016 12:10 pm
sideband
(@sideband)
Posts: 4274
Famed Member Moderator
 

Hi Marc.

No EY81's unfortunately. I have ECC84's, ECF80's, EL81's, but not a single EY81......sorry.glum

 
Posted : 13/10/2016 10:14 pm
PYE625
(@pye625)
Posts: 5114
Famed Member Registered
 

Hi Marc,

I did see some EY81's on a well known on-line auction site at a fairly moderate cost, if all else fails.

Not sure if I'm allowed to mention the site, but it begins with "e" wink

To understand the black art of electronics is to understand witchcraft. Andrew.

 
Posted : 13/10/2016 10:19 pm
Page 1 / 8
Share: