Conrad Digital Thermometer Module With LED Display Kit 192147 Data Sheet
Product codes
192147
If everything is OK here, then the next place to look for a possible fault is a cold solder
joint. These unpleasant things while tinkering occur when either the solder point was not
heated properly, so that the tin comes properly in contact with the cables, or when the
joint was moved while cooling at the time it was just setting. Such faults can mostly be
detected at the matt-look of the surface of the solder joint. The only solution here is to
solder the joint once again.
joint. These unpleasant things while tinkering occur when either the solder point was not
heated properly, so that the tin comes properly in contact with the cables, or when the
joint was moved while cooling at the time it was just setting. Such faults can mostly be
detected at the matt-look of the surface of the solder joint. The only solution here is to
solder the joint once again.
90% of the reclaimed kits have soldering faults, cold solder joints, incorrect soldering tin
used, etc. Many a returned “masterpieces” bear witness to improperly done soldering.
Therefore, use only the electronic soldering tin “SN 60 Pb” (60% tin and 40% lead) for
soldering. This soldering tin has a colophony core, which acts as soldering flux, in order
to protect the soldering joint from being oxidised during soldering. Other soldering fluxes
like soldering grease, soldering paste or soldering fluid may not be used in any case,
because they contain acids. They can damage the printed circuit board and the
electronic components; moreover, they also conduct electricity and thereby cause
leakage currents and short-circuits.
used, etc. Many a returned “masterpieces” bear witness to improperly done soldering.
Therefore, use only the electronic soldering tin “SN 60 Pb” (60% tin and 40% lead) for
soldering. This soldering tin has a colophony core, which acts as soldering flux, in order
to protect the soldering joint from being oxidised during soldering. Other soldering fluxes
like soldering grease, soldering paste or soldering fluid may not be used in any case,
because they contain acids. They can damage the printed circuit board and the
electronic components; moreover, they also conduct electricity and thereby cause
leakage currents and short-circuits.
If everything is okay till this point and the circuit still does not work, then probably a
component is defective. If you are an electronics amateur, then it is the best for you to
consult a known person, who is well-versed with electronics and has the necessary
measuring equipment.
component is defective. If you are an electronics amateur, then it is the best for you to
consult a known person, who is well-versed with electronics and has the necessary
measuring equipment.
If you do not have this option, then return the kit properly packed to our service
department along with an exact description of the fault as well as the related assembly
instructions (only an exact description of the fault will enable a proper repair!). An exact
description of the fault is important, because the fault can also lie in your mains supply or
in your external wiring.
department along with an exact description of the fault as well as the related assembly
instructions (only an exact description of the fault will enable a proper repair!). An exact
description of the fault is important, because the fault can also lie in your mains supply or
in your external wiring.
Note
Before going in production, this kit was built and tested several times as prototype. It
was released for serial production only when an optimum quality was achieved with
respect to function and operational safety.
was released for serial production only when an optimum quality was achieved with
respect to function and operational safety.
The entire assembly is classified in two construction stages, in order to ensure a certain
functional safety while building the system:
functional safety while building the system:
1. Construction stage I: Mounting the components on the board
2. Construction stage II: Functional test
While soldering the components see to it that they (unless indicated otherwise) are
soldered on to the plate without any gap. All projecting connection wires are cut directly
above the solder joint.
soldered on to the plate without any gap. All projecting connection wires are cut directly
above the solder joint.
Since the solder points in this kit are very small ones, lying partly very close to one
another (risk of solder straps), the soldering must be done here only with a soldering iron
with a small soldering tip. Do all the soldering and assembly work very carefully.
another (risk of solder straps), the soldering must be done here only with a soldering iron
with a small soldering tip. Do all the soldering and assembly work very carefully.
Soldering instructions
If you do not have much practice in soldering, then it is advisable to go through these
soldering instructions before you actually start soldering. Soldering must be learnt.
soldering instructions before you actually start soldering. Soldering must be learnt.
1.
Never use soldering grease or soldering fluid when soldering electronic components.
These contain acids, which can damage the components and conducting paths.
These contain acids, which can damage the components and conducting paths.