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Old 13th February 2010, 14:29   #21
James.uk
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My congratulations Mike on solving a long term mystery!

Now to the practicalities for us who have no idea what elec components are or do..

I realize that quite apart from the actual FBH there are other items = fuel pump, a fan blower of some sort, elec feed to some sort of glow plug, exhaust system, etc etc that may now fail to work due to lack of use over the years..

I don't mind paying, and am willing to travel to get my FBH working, but it may need more than just repairing the circuit board.. So is anyone planning on making a comprehensive repair service available in the UK for those of us who need it please?? ..
..

Last edited by James.uk; 13th February 2010 at 14:39..
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Old 13th February 2010, 15:51   #22
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Ive been following this thread also as my FBH didn't work and I wanted to repair the Pcb myself as i have plenty of electronic repair experience and refused to be beaten by the lack of back up provided by Webasto .However I managed to buy a cheap unit before I had got far with researching my faulty unit so never made much progress, it s great that French mike has managed to get to the bottom of the problem and come up with a solution, my faulty unit has an earlier Pcb that is not quite the same but im now going to have another go at it and am also happy to try the repair on other peoples pcbs.As I have a spare heater I can arrange a test rig if I get a spare fuel pump from somewhere.
Has anyone got any faulty boards that I can experiment with?.
I am sure others will be able to offer a service with the info kindly provided by Mike and would not want to take work from him but am happy to provide a service if its ok with Mike.
Paul
Quote:
Originally Posted by James.uk View Post
My congratulations Mike on solving a long term mystery!

Now to the practicalities for us who have no idea what elec components are or do..

I realize that quite apart from the actual FBH there are other items = fuel pump, a fan blower of some sort, elec feed to some sort of glow plug, exhaust system, etc etc that may now fail to work due to lack of use over the years..

I don't mind paying, and am willing to travel to get my FBH working, but it may need more than just repairing the circuit board.. So is anyone planning on making a comprehensive repair service available in the UK for those of us who need it please?? ..
..
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Old 13th February 2010, 21:18   #23
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Quote:
Originally Posted by James.uk View Post
My congratulations Mike on solving a long term mystery!

Now to the practicalities for us who have no idea what elec components are or do..

I realize that quite apart from the actual FBH there are other items = fuel pump, a fan blower of some sort, elec feed to some sort of glow plug, exhaust system, etc etc that may now fail to work due to lack of use over the years..

I don't mind paying, and am willing to travel to get my FBH working, but it may need more than just repairing the circuit board.. So is anyone planning on making a comprehensive repair service available in the UK for those of us who need it please?? ..
..

Hi,James

Mechanical parts are rather robust !
Mine,after 3 years of non functioning, started on first time.

Mike
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Old 13th February 2010, 23:15   #24
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Quote:
Originally Posted by foxspeed View Post
these faulty "resistors" do we know of a place that can supply them ???

not really in to circuit baords and the like so plenty of info is a must
CPC
RS
Maplin etc

Replacement resistors don't even need to be surface mount.
The standard 1/4 Watt axial type are easier to handle & solder
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Old 13th February 2010, 23:27   #25
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Quote:
Originally Posted by Jules View Post
CPC
RS
Maplin etc

Replacement resistors don't even need to be surface mount.
The standard 1/4 Watt axial type are easier to handle & solder
ah i see - did look at them on the maplin site and wondered if they would do the same job - thanks !
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Old 14th February 2010, 05:44   #26
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Default mike

you know its guys like you 'and just a few others to mention' jules, big russ, raitslin' with your expertise who really get into the nitty gritty of things, that helps make this club what it is
a friendly sociable countrywide garage filled with idea's, views, know-how and advice, thats open every hour of the day and every day of the year.
what an excellent place to belong to.

a very big thankyou to you all
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Old 14th February 2010, 06:23   #27
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you know its guys like you 'and just a few others to mention' jules, big russ, raitslin' with your expertise who really get into the nitty gritty of things, that helps make this club what it is
a friendly sociable countrywide garage filled with idea's, views, know-how and advice, thats open every hour of the day and every day of the year.
what an excellent place to belong to.

a very big thankyou to you all
Second that And not forgetting the -Light- entertainment provided by the -sports- commitee
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Old 14th February 2010, 15:31   #28
James.uk
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Hiya Mike.

>>>Mechanical parts are rather robust ! mine,after 3 years of non functioning, started on first time.<<<

Thanks for that, and I hope you are right! Dunno how long it is, or even if ever, since the FBH woorked on my car, fingers and toes crossed that it will work once the circuit board been repaired..

Come to think of it, I don't know how long my fuel pumps have been in the car either so must consider replacing those as well soon.

Roll on spring, so I can get out and about again without freezing!!
..

Last edited by James.uk; 14th February 2010 at 15:35..
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Old 17th February 2010, 19:45   #29
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Default Procedure Before Sending Your Pcb

PROCEDURE BEFORE SENDING YOUR PCB.

At first, manage to permanently connect a wire between pin 3 of the 6 pin plug
And earth in order to forget the +5 degrees limit.

You must hear the turbine increasing its speed and the circulating pump running

If the noise stops after 2minutes and 7 seconds, then,

The pump fuel is faulty or PCB (more likely)

If it stops after 4 minutes then the glow plug resistor is too high.
(More than 0.4 ohm)
And ignition aborts.

However, it is useful to test each component before deciding that PCB is faulty.




Since the work is easier to do than it was first time (no more IC to replace),

My PRICE is 43 £ (one hour work) postage included

Input check ,repair, and outpout control with report.

Mike

Last edited by FrenchMike; 2nd December 2013 at 13:40..
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Old 17th February 2010, 21:47   #30
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Just in the process of testing a faulty board, have found up to now 4 faulty resistors all of which have been covered in the white compound.

Both resistors below the left hand capacitor and 2 under the right hand capacitor but not the bottom 4.7K one, that one's fine. The two that have failed on the right show signs of overheating, but the two on the left look normal.

Looks like any of the components that have been covered may be suspect.

Russ
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