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LED Cooker control module

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JKF1000

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The LED panel on my cooker has failed, the module appears to control the functions OK, but the clock display is not illuminating, I have done some searching on the web, but am not happy to part with £40 for a exchange module, on examination it is only the LED module that has failed, it is one of the large glass encased types, but cannot source the parts, if anyone can help it would be really appreciated. Its a belling cooker, and I think the timer module is part no. 316 T85 (a four wire module, mains in, and a switched pair) manufacturers are hopeless, quoting in excess of £120!!!! any help or suggestions, greatly appreciated, Karl.
 
Are you sure it's LED?, as you say 'glass enclosed', that sounds more like a flourescent display module. If so, the most common problem is failure of the heater supply to it (it's essentially a valve), often dry joints, or a capacitor which couples the AC to it.
 
Hi there Nigel, and thanks for the responce, I will pull the module again later and check it out, I am assuming it's a simple fault because, apart from the controller chip, there are barely a handfull of additional components, one of which is a mains coupled cap, will update after further investigation, Karl.
 
I have had another look, the board is manufactured by Invensys, model no.D78559, have looked at your sugggestion and checked all for dry joints etc, has all now been re-soldered, but still no signs of life. Have included pics of the module if it helps. One thing I have noticed in pic2, at the top left of the display is a piece of metal inside the display that appears to be bent, it looks worse when you have module in your hand, I have turned up the contrast a bit to try to get more detail. As I said before, the timer circuit still appears to work and control the oven, its just the display side, Karl.
 

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thats what makes it more interesting, there's virtualy nothing on the board to go wrong!!
 
Hi,
Photo's 1 & 2 clearly show that the heater elements are broken.

You need a new display.
 
yes, I see it, have spent last hour and a half online trying to source one, no luck, anyone any ideas?
 
Looks like you may be right, ah well was worth a try, and thanks again to everyone for the help and advice, greatly apppreciated. Karl.
 
I've bought an Invensys D78559 and can't fit it. HELP!!!

I know its a long time since JFK1000 posted (2008) but can anyone help me. I bought the Invensys D78559 cooker timer/controller from Indesit and they insist this is the correct replacement for my Creda 48431 cooker. My original timer is a Diehl Typ 311/162 T20 and the pin arrangements are different. Indesit won't help. Can anyone help me with connecting it up?
 
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