BOGEN SERVICE
We are interested in your Bogen amplifier for as
long as you have it. If trouble ever develops with
your unit, please do not hesitate to ask our advice or
assistance. Information can be obtained by writing to
Service Department, Bogen Communications, P.O.
Box 500, Paramus, New Jersey 07652.
When communicating with us, give the model num-
ber and serial number of your unit. Completely des-
cribe the difficulty encountered and the effects each
operating control has upon the symptoms of trouble.
Include details on electrical connections to associated
equipment, and list such equipment. When we receive
this information, we will send you service information
if the trouble appears to be simple. If the trouble re-
quires servicing, we shall send you the name and ad-
dress of the nearest Bogen authorized service agency
to which you can send your unit for repairs.
When shipping your unit, pack the amplifier well,
using the original shipping carton, or a similar con-
tainer and filler material, to prevent damage in tran-
sit. Send the unit, fully insured and prepaid, via rail-
way express. Do not ship via parcel post unless so
instructed. The unit will be promptly repaired and re-
turned to you via express collect.
CIRCUIT BREAKER
The amplifier circuitry is protected against el-
ectrical overload by a 1 ¾ ampere circuit breaker. To
reset the breaker, press the red reset button, located
on the top chassis left side, as shown in figure 2.
If the circuit breaker trips again, do not attempt
to operate the unit. Check the amplifier to determine
the cause of the overload, or consult a Bogen repre-
sentative or competent serviceman.
TRANSISTOR REPLACEMENT
Transistors and semiconductor diodes do not or-
dinarily require routine testing. When the receiver
does not perform properly and it is suspected that a
transistor or diode is at fault, only a qualified tech-
nician should test them.
However,
if previous tests by a technician in-
dicate that a transistor might be faulty, it must be
removed from the circuit for checking. The plug-in
transistors, of course, can easily be replaced. When
replacing plug-in transistors, use Dow Corning N
O
.
340 Compound Silicon Grease (or equivalent). Brush
compound on heat sink, insulator, and transistor. Be
certain that no foreign matter is on heat sink, in-
sulator, or transistor. To insure proper thermal con-
tact, screw down plug-in transistors securely.
PRINTED CIRCUIT REPAIR
When testing or replacing components on the
printed circuit, take care not to damage the board by
application of excessive heat or pressure. A 40-watt
pencil iron normally is sufficient to unsolder com-
ponent parts. If component leads are cut, always pull
them through from the top of the board - never pull
from the printed side. Do not insert the leads of re-
placement components into the board without first
clearing the holes. This may be done by heating the
solder and inserting a pick from the underside of the
board.
R E P L A C E M E N T P A R T S
The components used in Bogen equipment, with
exception of items listed below, are standard parts
through all reputable parts jobbers. However, several
parts are custom-made to strict Bogen specifications
and should be replaced only with genuine Bogen
parts. These custom-made parts are listed here and
are available through Bogen distributors, service
agencies or direct from the factory.
Ref. No. Part No.
c2, c3 79-008-034
Cl2
79-008-048
C l 8 79-005-039
C l 9 79-008-036
Cl04 79-009-065
C105, 106 79-009-053
CBlOl
94-0008-02
CRl, CR2 96-5184-01
96-5213-01
96-5228-01
96-5 187-01
Q3, Q4
96-5213-01
Q7
96-5131-01
QlOl,
96-5162-04
Q102, Q103
Description
Capacitor, Electrolytic,
25 mfd, 15V
Capacitor, Electrolytic,
50 mfd, 25V
Capacitor, Electrolytic,
1000 mfd, 15V
Capacitor, Electrolytic,
50 mf d, 15V
Capacitor, Electrolytic,
4000 mfd, 5OV
Capacitor, Electrolytic,
2000 mfd; 40V
Circuit Breaker, 2 Amp
Diode, 200 PIV, 3 Amp
Transistor 2N5089
Transistor BC239C
Transistor S2285
Transistor 2N5089
Transistor 40234
Transistor 2N3055 (95V)
When ordering a part, specify part number and
description of the part as listed below. Specify the
model and give the series designation, which is a run
letter followed by numbers, stamped or screened on the
rear of the chassis. Also, give the component board
assembly number (45-) for all parts mounted on PC
boards.
Ref. No.
Part No. Description
R5
R17
R18
R28
R34
R35
77-00 l-646
77-001-649
77-00 l-649
77-00 l-647
77-001-648
77-00 l-648
R43
R44
R45
R46, R47
R48, R49
SW101
TlOl
T102
T103
76- 113-098
75-412-56 1
75-842-221
75-743-511
75-742-100
81-003-025
83-726-000
83-396-000
83- 397-000
94-0197-O 1
85-0147-O 1
03-0594-01
03-0595-01
02-9029-01
Control, AUX Volume (CT fader)
Control, MIC 1 Volume
Control, MIC 2 Volume
Control, Bass (BD taper)
Control, Treble (Audio taper)
Control, Master Volume
(Audio taper)
Resistor,
5 watt
Resistor,
2 watt
Resistor,
3 watt
Resistor,
7 watt
Resistor,
7 watt
Switch, Power
Transformer, Power
Transformer, Driver
Transformer, Output
Bulb, No. 19
Plug, Speaker, 3-pin
Knob & Skirt (O-10)
Knob & Skirt (5-O-5)
Reset Marker
7
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