Sony FT1H Support Question
Sony FT1H Support Question
Find answers below for this question about Sony FT1H - SA 5.1-CH Home Theater Speaker Sys.Need a Sony FT1H manual? We have 2 online manuals for this item!
Question posted by paulrgs on February 7th, 2015
My Subwoofer Is Making A Humming Sound.
My subwoofer is not workig at all and it makes a humming sound. Does anyone kpnw why is it doing that? Is there a place in DC metro area that I can get it repaired?
Current Answers
Answer #1: Posted by waelsaidani1 on February 10th, 2015 9:30 AM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,777
Member since:
May 12th, 2013 Points: 19,501,777
Follow the steps below to troubleshoot this issue:
IMPORTANT:
- All the speakers connected to the receiver must be rated at 8 ohms or higher.
- If model-specific information is required to complete any of the steps in this solution, refer to the operating instructions supplied with the product. Manuals are available online through the Manuals/Specs/Warranty link on this page. section of the Sony® eSupport Web site.
- Turn off the Audio/Video (A/V) receiver.
- Unplug the power cord of the A/V receiver from the AC outlet.
- Ensure that all the A/V cables are connected securely to the proper input or output jacks.
- Move the A/V cables away from any AC power cords.
- Plug the power cord back into the AC outlet.
NOTES:
- Plug the power cord directly into a wall AC outlet. Connecting the power cord to a surge protector or power strip may be causing the issue.
- It may be necessary to unplug any additional devices from this outlet.
- Turn on the A/V receiver.
- If the issue is not resolved, turn off the A/V receiver.
- Unplug the power cord from the AC outlet.
- Plug the power cord into a different wall AC outlet.
- Relocate any electrical devices or other sources of possible interference away from the A/V receiver.
- Turn on the A/V receiver.
- If the issue is not resolved, turn off the A/V receiver.
- Disconnect all the A/V cables from the A/V receiver.
- Turn on the A/V receiver.
- If the buzzing or humming sound is not heard, connect the A/V cables for each component back into the A/V receiver one at a time to determine which component is causing the issue.
IMPORTANT: If it is determined that the issue is being caused by a turntable, then the turntable may need to be grounded.
- Replace the A/V cable for the component that appears to be causing the issue.
- Connect another speaker to the jack of the buzzing speaker to ensure the wire or speaker is not causing the issue.
The troubleshooting steps listed above should resolve your issue. If you have completed all of the steps and the issue is not resolved, service may be required.
Related Sony FT1H Manual Pages
Service Manual - Page 1
... top stand
Approx. 0.55 kg
- COMPONENT MODEL NAME FRONT/SURROUND SPEAKER CENTER SPEAKER SUBWOOFER
SS-MSPFT1/SRPFT1 SS-CNPFT1 SA-WPFT1
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 6 ohm loads, from 250 milliwatts to rated output. Continued on next page -
HOME THEATRE SPEAKER SYSTEM
9-887-229-01
2006D04-1 © 2006.04
Sony Corporation...
Service Manual - Page 2
...Simpson 229 or RCA WT-540A. SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
SS-CNPFT1 (center speaker) Speaker system
Speaker units
Enclosure type Rated impedance Power...50 mm Approx. 0.5 kg Approx. 0.6 kg
SA-WPFT1 (subwoofer) Speaker system
Speaker units Enclosure type
Reproduction frequency range Continuous RMS power output
Active subwoofer, magnetically shielded Woofer: 20 cm, cone type Acoustically...
Service Manual - Page 3
... Schematic Diagram -Main Section 12 3. ELECTRICAL PARTS LIST 17
3 Control/AC Board 6 1-5. Front/Surround Speaker Section
(SS-MSPFT1/SRPFT1 16 4. Subwoofer AMP Section (SA-WPFT1 14 3-3. DIAGRAMS 2-1. Subwoofer Front Section (SA-WPFT1 13 3-2. Main Board 7 2. Block Diagram 9 2-2. SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
TABLE OF CONTENTS 1. Printed Wiring Boards -Main Section 10...
Service Manual - Page 4
HEAT SINK SECTION (Page 6)
1-4. MAIN BOARD (Page 7)
4
CONTROL/AC BOARD (Page 6)
1-5. AMP SECTION (Page 5)
1-3. SET
1-1. SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
SECTION 1 DISASSEMBLY
• The equipment can be removed using the following procedure. BACK PANEL SECTION (Page 5)
1-2.
Service Manual - Page 5
... section
1-2. AMP SECTION
7 AMP section
3 CN602 (3P)
4 two screws (1) (3.5 × 16), tapping
5 screw (1) (3.5 × 16), tapping
1 CNP901 (2P) 2 CNP501 (2P)
6 two screws (1) (3.5 × 16), tapping
5 SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
Note: Follow the disassembly procedure in the numerical order given.
1-1.
Service Manual - Page 6
CONTROL/AC BOARD
4 three screws (+BVTP 3 × 8)
1 CNP103 (8P)
5 CONTROL/AC board
6
2 CNP902 (3P)
3 CNP904 (3P) HEAT SINK SECTION
4 heat sink section
3 three screws (+BVTT 4 × 8)
2 CNP711 (5P)
1 CNP701 (3P)
1-4. SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1 1-3.
Service Manual - Page 8
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
SECTION 2 DIAGRAMS
• Circuit Boards Location
LED ...8486; and 1/4 W or less unless otherwise
specified. • 2 : nonflammable resistor. • C : panel designation. Line. • Voltage is dc with respect to ground under no mark : POWER ON
∗ : Impossible to normal production tolerances. Note: The components identified by mark 0 or dotted line...
Service Manual - Page 9
...R802
RY901
+3.7 REG. LED DRIVE Q630
D605
T1 MAIN POWER TRANSFORMER
T202 SUB TRANSFORMER
SP101 SPEAKER
RY501
F901 2.5A
S902 POWER
AC IN - SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
2-1. BLOCK DIAGRAM
J101 LINE IN
IC101 (2/2)
5
LINE BUFFER
7...
Q505
PROTECT CONTROL IC500
2 DC DETECT
RELAY DRIVER 6
1 OVER LOAD
4 AC OFF
+14V -14V
+14V REG. SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
9
9
Service Manual - Page 10
...
GRN
YEL
BLK
BRN
ORG
BLK
RED
D
R720
C710
12
13
EP3
11 1-869-295- (11)
SP101 SPEAKER
BLK RED
BLU
BLK
GRN
YEL
BLK
BRN
BLK
ORG
BLK
D301 D304 D303 D302
E JW205 C302
JW204
T202 ...CONTROL/AC
C BOARD
CNP903
J
(Page 11)
T1
MAIN
B
TRANSFORMER
(CONTROL/AC BOARD)
(Page 11)
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
10
RED BLK ORG YEL BRN GRN YEL WHT BRN BLK BLU RED BLK WHT
...
Service Manual - Page 11
... B-12
IC101 C-8
Q606 B-13
IC102 D-9
Q608 B-13
J
IC103 D-11
Q630 D-14
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
RV101 LEVEL
R113
3
1
CN101
PNK
BLK WHT 11 1-869...; Refer to page 8 for Circuit Boards Location.
1
2
3
4
5
6
7
A
: Uses unleaded solder.
8
9
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
10
11
12
13
14
JW912
AC IN
B
C
D
2
1
CNP902
CNP901
JW914
FH951
F901
FH901...
Service Manual - Page 12
MAIN SECTION - SCHEMATIC DIAGRAM -
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1 2-4. J101
C102 R101
IC101(2/2)
R10 C101
R100
R102
C104 R104 R105
...Q710
R718 R717
Q711
C712 R721
Q709 C716
CNP701 C715
R722 C710
R720 C711
Q708
CNP711
CN702
R724
Q731
C714
R723
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
R507
R511 C511
RY501
D502
12
12
D805 C807 D803 C808
D804
R801
D802
C805
...
Service Manual - Page 13
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
SECTION 3 EXPLODED VIEWS
NOTE: • The mechanical parts with no reference
number in the last of this parts list.
The components identified by mark 0 or dotted line with part number specified. SUBWOOFER FRONT SECTION (SA...routine service. Description
2-591-720-01 FOOT 1-826-369-11 LOUD SPEAKER (20cm) 7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
Remark
13...
Service Manual - Page 15
...107 2-670-949-01 PLASTIC WASHER 108 4-977-358-01 CUSHION
Remark
Ref.
CENTER SPEAKER SECTION (SS-CNPFT1)
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
not supplied
SP202
not supplied
#4 #4
103 104
#4
...948-01 1-825-913-11 1-826-370-11 1-826-370-11 7-685-646-79
STAND SPEAKER (2.5cm) LOUD SPEAKER (3X12cm) LOUD SPEAKER (3X12cm) SCREW +BVTP 3X8 TYPE2 N-S
#3
7-685-648-79 SCREW +BVTP 3X12 TYPE2 ...
Service Manual - Page 16
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
3-4. FRONT/SURROUND SPEAKER SECTION (SS-MSPFT1/SRPFT1)
151
SP301 (SS-MSPFT1) SP401 (SS-SRPFT1) not supplied
not ...No. Description
Remark
2-670-786-01 BASE 4-977-358-01 CUSHION 1-826-373-11 LOUD SPEAKER (8cm) (SS-MSPFT1) X-2108-885-1 TWEETER ASSY (SS-MSPFT1) 1-826-373-11 LOUD SPEAKER (8cm) (SS-SRPFT1)
#4
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#5
...
Service Manual - Page 17
... reference number, please include the board.
Ne les remplacer que par une piéce portant le numéro spécifié. Ref.
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
SECTION 4 ELECTRICAL PARTS LIST
CONTROL/AC
NOTE: • Due to standardization, replacements in ohms. METAL:Metal-film resistor. C101 C102...
Service Manual - Page 18
SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1 CONTROL/AC LED MAIN
Ref. Description
1-249-429-11 1-247-863-11 1-249-429-11 1-247-831-11 1-247-871-...
Service Manual - Page 22
Also, clicking the version at the upper on the revised page allows you to jump to the next revised page. Date
1.0
2006.04 New
Description of Revision
22 Ver. SA-FT1H/WPFT1/SS-CNPFT1/MSPFT1/SRPFT1
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
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