7A18: Difference between revisions

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387 bytes added ,  11 August 2023
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7A18N photos
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==Repair issues==
==Repair issues==
===Attenuator solder joints===
The pins of the attenuator modules are connected to conductive traces on the ceramic substrate inside by low-temperature soldering, which can go bad.
The pins of the attenuator modules are connected to conductive traces on the ceramic substrate inside by low-temperature soldering, which can go bad.
Re-seating the module can temporarily restore the internal contact but will usually not fix the problem permanently.
Re-seating the module can temporarily restore the internal contact but will usually not fix the problem permanently.
Repair is possible by opening the click-locked lid and carefully resoldering.
Repair is possible by opening the click-locked lid and carefully resoldering.
===Variable gain pots===
These pots (R237A,B and R437A,B 315-0241-00) are bonded together - looking at a few 7A18s, I see that the design was changed at least once.


==Pictures==
==Pictures==
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7A18 and 7A18N from 070-1126-01.png | 7A18 and 7A18N from service manual 070-1126-01
7A18 and 7A18N from 070-1126-01.png | 7A18 and 7A18N from service manual 070-1126-01
Tek 7a18n.jpeg                      | 7A18N with "Identify" Kurt to check?
Tek 7a18n.jpeg                      | 7A18N with "Identify" Kurt to check?
7A18N front.jpg                    | 7A18N Front
7A18N RHS.jpg                      | 7A18N RHS switch cover removed
7A18N LHS.jpg                      | 7A18N LHS switch cover removed
</gallery>
</gallery>
===Development Prototypes===
===Development Prototypes===
901

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