first went to look at the SPS-160 in the field, thinking a simple
repair might fix it as it is a later model machine and possibly less
likely to have as many age-related problems. It would accept selections
from the keyboard properly, scan, and pick up the record, but
immediately reject it. We were not able to fix the problem in the field
so the owner brought it in to the shop.
SPS-160 operating, front view.
Here is the machine with the decorative front panel removed. The top
slides off and then the front lighted panel lifts up and off. A lever
under the top part releases the top, which folds down to gain access to
the amp and control center.
Rewiring the power cord and power switch. A new grounded power cord was installed.
Here, the decorative panel is folded down to access the control center.
The amp is behind the control center, and is accessed by swinging the
control center out. We discovered that someone had loosened the fuses
in the control center! We re-installed them and the machine began to
select normally. We also replaced the 15-amp transformer fuse with a
5-amp for better protection. The fluorescent bulb was bad so it was
Here is the interior of the control center. Someone had removed one end
of the fuses on the circuit board from the fuse clips, causing the
machine to not pick up records.
Here is the amp. We replaced two capacitors which showed high ESR...all others appeared O.K.
Here are the two new small capacitors.
Here is the mechanism, where there was another problem. The contacts in
the reversing switch were not making good contact, causing the motor to
intermittently slow down and sometimes stop due to arcing at the
We were able to provide more contact "follow through" by slightly
bending the metal backing piece behind the offending switch leads.
DANGER! There is 120 volts on these contacts. Don't adjust without
unplugging machine! These contacts must be handled very gently as this
switch is difficult to replace.
SPS-160 record rack.
We usually automatically replace fluorescent ballasts in jukeboxes as
the old cloth-covered wire often deteriorates from intense heat
produced by the ballasts. These ballasts all initally did not appear to
have any heat damage and had plastic insulated wire so we decided to
test them to see if they would work OK...however the large ballast quit
working and became extremely hot during a test so we knew we needed to
replace it. We also replaced the small ballasts for the smaller lamps.
The old large ballast is a starter-type and we replaced it with a
modern rapid-start type so some re-wiring was needed for it to operate
properly. (The small white ballasts will not light up the larger 36"
tubes such as the one the large ballast was connected to.)
Here is the new wiring for the new ballasts.
New ballasts installed.
SPS-160 keyboard. Seeburg was the first company to come out with a
completely digital control system, using number codes to select records
instead of letter/number matrices and mechanical memory systems. The
first record in the rack is numbered "100/200" for side A/side B
instead of the old A1/B1 code, and the last record is 179/279 instead
These machines use the same Tormat core memory as their predecessors,
but the mechanical keyboard switch matrix has been replaced by an
electronic circuit (the "black box" and "grey box"). The selection
circuit worked perfectly with no problems.
Dark view. The woofers are located in the base under the center lighted panel, and horn tweeter are located in the upper panel.