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Pioneer TX-9100 recap / refurbishment
This TX9100 was sold (2024), its new owner reported it to pull in more stations than any other of his tuners (which includes another TX9100), sounding very good.
He also mounted a new casing and front panel from a donor unit himself, it is in use in conjuction with a refurbished Sansui AU9500.
It is good to know it is in collectors hands and actually being used.
Gemakshalve is deze pagina alleen in het Engels geschreven.
This page is written using English language only.
This Pioneer TX-9100 was still working when aquired.
It was decided to do a quick refurbishment, using parts already at hand.
Further comments on this page are rather technical, more or less aimed at technicians, to share experiences. They assume people having documentation at hand, which can be downloaded from the web.
There are some subjective comments on this tuner on the well-known fmtunerinfo site. (although, sometimes to be taken with a grain of salt)
The power supply board
The power supply board is located at the bottom.
It delivers several voltages. Electrolytic capacitors and most transistors were replaced.
The MPX /Audio board and parts changes, also of AM/IF board
The stereo separation potentiometer on this board was replaced by a fixed resistor.
The tuner bottom side, before the update
Bottom side, after the update
The tuner top side, before the update
Top side, shielding removed, after the update