Cut the carbon track and carefully place an 82k resistor in it's place. Do this as long as you are reading anything from about 13-14.98 volts from the wire going to the TSB board. If you see pressure working there is nothing wrong with the board.
Sent from my iPad
On 19 May 2013, at 12:58, "Robert Stewart" <bob@...> wrote:
> OK. Just been looking at the pic, and the service manual.
> It could well be that the resistive print in that area is faulty either
> due to wear and tear, or just plain old age.
> Looking at the service manual it suggests that on either side of the
> contact resistor (topologically speaking) are some resistors. If you're
> feeling brave you try adding a new resistor into the path to compensate
> for the error?
>
> B
> On 19/05/2013 11:31, joachim.milson wrote:
>>
>>
>>
>> Thanks Bob for your answer.
>>
>> I already cleaned the boards and sensors carefully.
>> The contacts are very clean. I did it very carefully under a
>> magnifying lens. Also, I changed the sensor with an other one but the
>> issue is still there. So on my opinion, the problem is the PCB itself.
>>
>> Joachim
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