How to replace components
on the generator print
82
SM/Transsonic_LC/1104/D
© Elma GmbH & Co KG
On older units or in a humid ambience the brass rings (A) and
the brass contacts can become oxidized. As a consequence the
connection between the emitter and the basic connection with
the generator print can be interrupted. This fault usually causes
a tottering contact.
Typical for this fault is the lighted pilot lamp for the ultrasound
and an intact fuse on the generator print.
Knocking on the housing or on the cooling angle of the
generator print can cause the generator to stop and start
functioning.
Deoxidize the brass rings and contacts with a knife or a glass
fiber brush (scratch them clean) and solder the contacts new.
Correct functioning can be checked by means of an insulated
bar which is carefully levered between the cooling body and the
generator print.
Illustration 15.4.2. Position of transistor contacts
There can occur a short circuit in the varistor due to extreme
peak voltages or to a mains overvoltage (fuse and varistor
faulty). The varistor is visibly broken and black. Usually, no
other components are faulty.
115V: 200 000 6132
230V: 200 000 5064
The diodes (BA 159 or DSEI8-06A on T1040-T1060 115V) can
be faulty in case of a short circuit of the transistors.
BA 159: 200 000 6123
DSEI8-06A: 200 000 5149
Bad soldering at
transistor socket
Remedy
A
Varistor
Elma Order No.
Diodes
Elma Order No.
Summary of Contents for LC130H
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