On Tuesday, 20 October 2015 20:44:06 UTC+1, Phil wrote:
replying to David , Phil wrote:
wibble wrote:

I have a CM927 which is a couple of years old.
Individual cells in the LCD screen are starting to fail - still usable at
the moment but a bit disconcerting.
Google gives a mixed picture.
Some posters say they have had loads of failures.
Others say they have never had a problem.
Anyone here had the problem with a CM927 - either own or supplied to
others?
More importantly, have you had more than one fail?
Cheers
Dave R
--
Windows 8.1 on PCSpecialist box



had the same problem found a diy fix in another forum

Strip the unit and remove the circuit board (just a few plastic clips, no
screws). Remove the LCD assembly from the circuit board (more plastic
clips and an eight pin push connection). Removed the LCD unit from the
clear plastic housing (more plastic clips). Finally heat up the plastic
ribbon where it is stuck to the circuit board (hair dryer will do trick)
and then firmly press it onto the circuit board... probably worth doing
this several times; in effect you are remating the ribbon to the circuit
board by softening the adhesive. Put it all back together and it should be
working again.

worked for me

--

Coming back to a very old post.

I have followed the instructions and got to the point where the PCB is out of the clear plastic cover.

I now have two main parts - the screen with a ribbon cable coming out of one side and the PCB.

However the PCB has a thick white foam backing with thin plastic behind it which in turn is soldered to a couple of pins on the PCB.

This covers the side of the PCB where the ribbon cable attaches. At first look it doesn't seem easy/safe to try and remove this and the foam to get at the PCB where the ribbon cable attaches.

So is this a different variant from the one described, or do I heat the green side of the PCB opposite where the ribbon cable is attached underneath?

On Tue, 29 May 2018 06:26:16 -0700, chelsworth.lodge wrote:

On Tuesday, 20 October 2015 20:44:06 UTC+1, Phil wrote:
replying to David , Phil wrote:
wibble wrote:

I have a CM927 which is a couple of years old.
Individual cells in the LCD screen are starting to fail - still
usable at the moment but a bit disconcerting.
Google gives a mixed picture.
Some posters say they have had loads of failures.
Others say they have never had a problem.
Anyone here had the problem with a CM927 - either own or supplied to
others?
More importantly, have you had more than one fail?
Cheers Dave R --
Windows 8.1 on PCSpecialist box



had the same problem found a diy fix in another forum

Strip the unit and remove the circuit board (just a few plastic clips,
no screws). Remove the LCD assembly from the circuit board (more
plastic clips and an eight pin push connection). Removed the LCD unit
from the clear plastic housing (more plastic clips). Finally heat up
the plastic ribbon where it is stuck to the circuit board (hair dryer
will do trick) and then firmly press it onto the circuit board...
probably worth doing this several times; in effect you are remating the
ribbon to the circuit board by softening the adhesive. Put it all back
together and it should be working again.

worked for me

--

Coming back to a very old post.

I have followed the instructions and got to the point where the PCB is
out of the clear plastic cover.

I now have two main parts - the screen with a ribbon cable coming out of
one side and the PCB.

However the PCB has a thick white foam backing with thin plastic behind
it which in turn is soldered to a couple of pins on the PCB.

This covers the side of the PCB where the ribbon cable attaches. At
first look it doesn't seem easy/safe to try and remove this and the foam
to get at the PCB where the ribbon cable attaches.

So is this a different variant from the one described, or do I heat the
green side of the PCB opposite where the ribbon cable is attached
underneath?

Ah!

Found a link in the discussion to
https://www.youtube.com/watch?v=W4LxHn5Y_l4&t=189s
which shows that you do have to lever off the white pad and swing it back
on the soldered connections.

Will give that a go in a bit.



Cheers


Dave R


--
AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

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One issue I have heard about here is that often failures occur where the
unit is located in the sun or in a very hot position. Still it sounds like a
bit more environmental testing needed on their units before they sell them!
Brian

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"David" wrote in message
...
On Tue, 29 May 2018 06:26:16 -0700, chelsworth.lodge wrote:

On Tuesday, 20 October 2015 20:44:06 UTC+1, Phil wrote:
replying to David , Phil wrote:
wibble wrote:

I have a CM927 which is a couple of years old.
Individual cells in the LCD screen are starting to fail - still
usable at the moment but a bit disconcerting.
Google gives a mixed picture.
Some posters say they have had loads of failures.
Others say they have never had a problem.
Anyone here had the problem with a CM927 - either own or supplied to
others?
More importantly, have you had more than one fail?
Cheers Dave R --
Windows 8.1 on PCSpecialist box



had the same problem found a diy fix in another forum

Strip the unit and remove the circuit board (just a few plastic clips,
no screws). Remove the LCD assembly from the circuit board (more
plastic clips and an eight pin push connection). Removed the LCD unit
from the clear plastic housing (more plastic clips). Finally heat up
the plastic ribbon where it is stuck to the circuit board (hair dryer
will do trick) and then firmly press it onto the circuit board...
probably worth doing this several times; in effect you are remating the
ribbon to the circuit board by softening the adhesive. Put it all back
together and it should be working again.

worked for me

--

Coming back to a very old post.

I have followed the instructions and got to the point where the PCB is
out of the clear plastic cover.

I now have two main parts - the screen with a ribbon cable coming out of
one side and the PCB.

However the PCB has a thick white foam backing with thin plastic behind
it which in turn is soldered to a couple of pins on the PCB.

This covers the side of the PCB where the ribbon cable attaches. At
first look it doesn't seem easy/safe to try and remove this and the foam
to get at the PCB where the ribbon cable attaches.

So is this a different variant from the one described, or do I heat the
green side of the PCB opposite where the ribbon cable is attached
underneath?

Ah!

Found a link in the discussion to
https://www.youtube.com/watch?v=W4LxHn5Y_l4&t=189s
which shows that you do have to lever off the white pad and swing it back
on the soldered connections.

Will give that a go in a bit.



Cheers


Dave R


--
AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

---
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replying to Michelle, Rick wrote:
Well done! After mine failed recently I dismantled it and left it on top of
the AGA cooker for a day. Full functionality returned so I put it in a sealed
plastic bag with a load of silica gel sachets. Three days later and it is
still working, so fingers crossed

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Jonathan W wrote:
Worked for mean my CM927!! Fantastic, THANK YOU. Clamped the LCD unit
(PCB/white filler and glass) together with bulldog clips and used the
hairdryer for about 10 minutes until screen went darker. I felt it would
introduce the heat more gently and evenly than a toaster. Let it cool and then
reassembled. Success.

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Danny wrote:
Did Phil instructions a hay presto soon as the temperature came down from
using the hair dryer all working fine that £100 cheers phil

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

I've hear this so often now, I'm beginning to wonder why the company don't
fix the problem.
Brian

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"Danny" m wrote in
message ...
replying to Phil, Danny wrote:
Did Phil instructions a hay presto soon as the temperature came down from
using the hair dryer all working fine that £100 cheers phil

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replying to Graham., Bobby Boy wrote:
Thank you Graham. Your post may be over 3 years old, but applying pressure and
holding for 30 seconds did the trick.

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Paul wrote:
And this is why I love the internet. 3 years later this post is still saving
people money. Thanks for the guidance Phil, fixed it nicely.

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Robby E wrote:
This is an old thread but I wanted to thank you. I have just fixed mine. I
would add it is the back of the LCD unit (green part) that needs to have heat
applied . I could see the ribbon on the edge but didnt realise it joins on the
whole of the rear. Apart from losing the LCD for 15 mins after digging my
misses hair dryer out of the cupboard it was pretty easy. Also if you
reassemble it face down the little rubber control pads sit in there located
holes. Thanks Chap !

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to David, _lurcher wrote:
CMS 927 Honeywell room thermostat if the display fails it will come back by
placing in a bag with moisture absorbing crystals but Honeywell replaced my 5
year old one free of charge after I contacted their consumer support.

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

On Fri, 14 Sep 2018 12:44:02 +0000, _lurcher wrote:

replying to David, _lurcher wrote:
CMS 927 Honeywell room thermostat if the display fails it will come back
by placing in a bag with moisture absorbing crystals but Honeywell
replaced my 5 year old one free of charge after I contacted their
consumer support.

a) David has probably fixed it over the last 3 years.
b) Notice the SOLVED bit at the top?



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*lightning surge protection* - a w_tom conductor

replying to Phil, Michael Valentine wrote:
Thanks Phil - this solution certainly did the trick ! Cheers Mike V

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replying to Phil, AntRob wrote:
Just found this through google search, Phil you are a life save, it worked a
treat, thank you very much

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Pablo G wrote:
How do I strip the CM927 to get to remove the circuit board please?

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

On Sunday, 26 August 2018 21:44:30 UTC+1, Robby E wrote:
replying to Phil, Robby E wrote:
This is an old thread but I wanted to thank you. I have just fixed mine. I
would add it is the back of the LCD unit (green part) that needs to have heat
applied . I could see the ribbon on the edge but didnt realise it joins on the
whole of the rear. Apart from losing the LCD for 15 mins after digging my
misses hair dryer out of the cupboard it was pretty easy. Also if you
reassemble it face down the little rubber control pads sit in there located
holes. Thanks Chap !

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

Yes, it worked for me. It didn't work first time but I found that heating up the circuit board (and the glass) for quite a long time with the hair dryer (about a minute?) and squeezing the circuit board and the glass together between finger and thumb, moving them up and down the length of the edge where the ribbon is, seemed to have been the trick. Thanks. John

replying to Karen, David wrote:
I have had about 6 of these over the years. All went the same way , digits
disappearing. I have used the hairdryer trick once and it worked for a few
months but then failed again! I have abandoned this model now (had the same
problem with an earlier CM67 too) and installed a hive system. There is a bit
of a market for faulty units on ebay which is handy.

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to David, myrtle wrote:
Yes I have 2 of them and both of them have failed to the point they are now
useless

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Paul, Heather wrote:
Yes same here Paul, slight improvement each time but on 4th try all digits are
now visible. Thanks so much Phil, you genius!

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Graham., noelsparty98 wrote:
I've had the same issue, but your advice worked wonderfully. Thank you.

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Mark Dalzell, LOU JANE wrote:
It just worked on mine too. Thank you!

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Mick wrote:
Used this hair dryer method on my Honeywell CM921 programmer when the display
broke up. The unit is 9 1/2 years old but the display was restored perfectly.
Many thanks.
Regards

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Rachel wrote:
This is a brilliant hack and my thermostat is now back up and running. Thank
you Phil.

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Graham., CHARLES JACKSON wrote:
the display is now ok however the backlight is now on all the time even when
off any suggestions

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On 10/09/2019 13:14, CHARLES JACKSON wrote:
the backlight is now on all the time even when off

Such erudition from home******s hub


--
Climate Change: Socialism wearing a lab coat.

replying to Phil, Barney wrote:
Thanks very much. This worked for mine.

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for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

Thanks for this. The battery on our wireless thermostat ran out during the summer and when we replaced the batteries we had exactly this issue. Took it apart and did exactly this, using a hairdryer. I had to do this 4/5 times, each time putting it back together and loading the batteries, each time more of the display started to show until the whole display worked.

Great hack!

replying to myrtle, Daeths wrote:
Hi my unit just failed too. Stripped down as described. The trickiest bit for
me was removing the actual lcd from the perspective cover. Gently prized it
out. €˜Unfolded the lcd from board with the ribbon being the hinge in the
middle. 15 second v hot burst with hair dryer then I used the round edge of
the plastic battery cover to gently push down the ribbon on both sides as near
to the screen or Baird as possible. Do not move for 30 seconds to allow to
cool. Reassemble. Job done. Many thanks to all. 15 minute very easy job even
for a a diy novice like me

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Alice Stanley wrote:
Phil you're a star, thanks to your info plus a couple of YouTube videos my
central heating controller is now working perfectly again. Thank you!

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to B, Patel wrote:
They told me same so I left bad reviews on trustpilot, I never expected big
companies like Honeywell can conning people like us

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, AWM wrote:
*BRILLIANT - thanks Phil. Last time it cost £13.50 to repair which is not
bad but lasted less than a year. 15 minutes fiddling is worth it.*

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

replying to Phil, Parksy wrote:
Achieving legendary status! Fix still works! Have a 10 year old CM927 losing
digits! Still worked on auto so didn't bother fixing! Got fed up with not
knowing room temp so gave it the hairdryer treatment and bingo!! Full
display!!! Woop wooop! Give that man a medal!

--
for full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

Omg it worked! Whoever posted this is a genius! My display was almost blank with and now its totally working! Saved me £93!

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For full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

I do wish you could post the original advice. I do remember it, form some
years ago, and yes there did seem to be a lot of them with the problem.
Brian

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"steve" wrote in message
roupdirect.com...
Omg it worked! Whoever posted this is a genius! My display was almost
blank with and now it's totally working! Saved me £93!

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For full context, visit
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It's been reposted on the wiki:

http://wiki.diyfaq.org.uk/index.php/...Screen_Failure

On Tuesday, 1 September 2020 at 07:31:12 UTC+1, Brian Gaff (Sofa) wrote:
I do wish you could post the original advice. I do remember it, form some
years ago, and yes there did seem to be a lot of them with the problem.
Brian

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Note this Signature is meaningless.!
"steve" wrote in message
oupdirect.com...
Omg it worked! Whoever posted this is a genius! My display was almost
blank with and now it's totally working! Saved me £93!

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For full context, visit
https://www.homeownershub.com/uk-diy...n-1058940-.htm

Yes, mine's driving me crazy.
Still usable, initially, - as yours - but has now completely died, so central heating not working. Help!

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For full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

Hello, very helpful ,worked for me thank you

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On 30/01/2021 16:15, Reusewhereyoucan wrote:
Hello, very helpful ,worked for me thank you

I strong recommend you read this before you reply again to to a 5 year
old post:
http://wiki.diyfaq.org.uk/index.php/Home_owners_hub

Most of us will have absolutely no idea what was helpful

I got a guy on eBay to replair mine. Cost £15. Free 0&o and no charge if he couldnt repair it. No brainer!

--
For full context, visit https://www.homeownershub.com/uk-diy...n-1058940-.htm

On 30/01/2021 18:31, Rachel S wrote:

I got a guy on eBay to replair mine. Cost £15. Free 0&o and no charge if
he couldnt repair it. No brainer!

Why pay someone £15 to do something you could do yourself in 10 mins?

http://wiki.diyfaq.org.uk/index.php/...Screen_Failure


--
Cheers,

John.

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