PHILCO PH32S61DG – LED LCD TV – SMPS – LED DRIVER and AUDIO AMPLIFIER CIRCUIT DIAGRAM

LED driver – Audio Amplifier & SMPS schematic – Philco PH32S61 LED-LCD TV

SMPS SCHEMATIC

LED DRIVER SCHEMATIC

AUDIO AMPLIFIER SCHEMATIC

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PANASONIC TC-P50G10 -Line Faults - POWER LED BLINKING CODES – HOTEL MODE – SERVICE MODE - 50 inch Class 1080p Plasma HDTV

How to enter service mode - hotel mode - Power LED blinking chart - Line faults -  PANASONIC TC-P50G10

 50 inch Class 1080p Plasma HDTV

POWER LED BLINKING TIMING CHART

When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

Check of the IIC bus lines: How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.

Hotel mode
Purpose: To restrict a function for hotels.
Access command to the Hotel mode setup menu
In order to display the Hotel mode setup menu,  enter the following command (within 2 second).
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times)
Then, the Hotel mode setup menu is displayed.

HOTEL MODE EXPLANATION

SERVICE TOOL MODE

1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.

Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].

POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for (3sec).
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.

Exit: Disconnect the AC cord from wall outlet.

LINE FAULTS & Defective Boards

Local screen failure & the suspected boards [line faults].  Plasma display may have local area failure on the screen.

JBL MS-A5001 - 1 CHANNEL Digital Signal Processing Amplifier – Wiring Diagram – Power and Amplifier section Circuit Diagram

Digital Signal Processing Amplifier JBL MS A5001 – Wiring Diagram – Power and Amplifier section Schematic - Exploded view & Parts List

Although some typical connections and controls are shown, JBL MS Series amplifiers include many features and digital controls not found on conventional car audio amplifiers.  Also, the setup (or testing) procedure for MS Series amplifiers is different (more complicated) from that of conventional car audio amplifiers.

SYSTEM WIRING DIAGRAMS

 Inputs can be channel-1 only or both channel 1 and 2, depending upon how the pass through output is to be used.  In this configuration, a single sub-woofer is connected at one of the MS-A5001 outputs.  A 4-ohm or 2-ohm sub-woofer can be used.

In this configuration, sub-woofers are connected in parallel at the dual mono input of MS-A5001.  Four ohm or eight ohm sub-woofers should be used.

Inputs can be channel 1 only or both channel 1 and 2, depending upon how the pass-through output is to be used.  One dual voice coil (DVC) sub-woofer is shown wired in series.  Do not have less than a 2ohm load at the amplifier.

POWER AMPLIFIER SCHEMATIC

POWER SUPPLY

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SPECIFICATIONS

Output Power: 500W RMS x 1 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 500W RMS x 1 channels @ 2 ohms; ≤1% THD + N
Signal-to-noise ratio: 80dBA (reference 1W into 4 ohms)
106dBA (reference rated power into 4 ohms)
Total Peak power: 500W
Frequency response: 20Hz – 270Hz (–3dB)
THD+N 1KHz LPF=22KHz < 1.0 % (rated power @ 4 ohms)
Input Impedance 10kΩ (Hi2 = 120)
Maximum input signal: 20.0V
Maximum sensitivity: 100mV
Bass Boost @ 80Hz 10dB
DC Offset <50mV
Idle Current @ 4 ohms <1.5A
Max Current Draw ≤45A
Remote Operating Voltage 5-16VDC
Turn-on delay time 1 sec
Circuit Protection Temp (85±5C), Short circuit, Operating voltage range (9-16V)
Dimensions: 7-3/16" x 8-1/4" x 2-3/4" 183mm x 210mm x 70mm
Fuse: 2 x 40A

EXPLODED VIEW

ViewSonic N2011 20 Inch LCD TV – Circuit Diagram – Password Change

Backlight inverter – SMPS – Audio Output & Audio Decoder  Schematic – ViewSonic N2011 LCD TV

To enable V-Chip password, input 8792 if you have not assigned the special password.

BACK-LIGHT INVERTER SCHEMATIC

VIN : 13V+/-10%
PWM : 0V---3.3V, 100%---40% PWM pulse. 100% maximum brightness; 40% minimum brightness
ON: 0V---1.0V, OFF; 2.0V---5.0V, Enable

SMPS SCHEMATIC

AUDIO DECODER SCHEMATIC

AUDIO OUTPUT SCHEMATIC

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ROLSEN 21C19 CTV SCHEMATIC USING STR G5663 – TDA938x-5X SYSTEM CHROMA JUNGLE

USED ICs: TDA7507AQ – STR G5663 – TDA938x/5X – AT24C08 – HEF4053 – TDA7449

 CIRCUIT DIAGRAM

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INFINITY KAPPA 5 - DISASSEMBLY – TROUBLESHOOTING – CIRCUIT DIAGRAM

Schematic Diagram - Component lead details – Disassemble Procedure – Exploded View – Infinity Kappa Five Car Audio System

SCHEMATIC DIAGRAMS

Output Power: 50W RMS x 4 channels @ 4 ohms ≤1% THD + N

(14.4V supply) & 200W RMS x 1 channel @ 4 ohms; ≤1% THD + N
75W RMS x 4 channels @ 2 ohms; ≤1% THD + N
& 300W RMS x 1 channel @ 2 ohms; ≤1% THD + N
Bridged (3 channel) 150W RMS x 2 & 200W RMS x 1 @ 4 ohms ≤1% THD + N
Total Peak Power 1200W
Signal-to-noise ratio: 85dBA (reference 1W into 4 ohms)
100dBA (reference rated power into 4 ohms)
Frequency response: 10Hz – 75kHz & 20Hz – 320Hz (–3dB)
THD+N 1KHz LPF=22KHz ≤0.05% (rated power @ 4 ohms)
Output Regulation 0.03dB @ 4 ohms
Input Impedance >20K ohms
Maximum input signal: 6.0V
Maximum sensitivity: 200mV
Bass Boost @ 50Hz 0-12dB
Channel Separation ≥50dB
DC Offset <30mV
Idle Current @ 4 ohms 2.0A
Max Current Draw ≤80A
Remote Operating Voltages ON 5V OFF 4V
Turn On Delay Time (sec) 2 - 3
Circuit Protection Temperature (75C), Short circuit, over/under voltage
Operating voltage range (8-16V)
Dimensions: 14 x 7 x 1.7” (360 x 179 x 44mm)
Fuses: (2) x 40A

EXPLODED VIEW & COMPONENT LEADS IDENTIFICATION

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KAPPA FIVE DISASSEMBLY INSTRUCTIONS. [NOTE keep track and separate any and all screws; they are dissimilar.]

1) Remove the two screws at opposite ends on the bottom of the heat sink.

2) Remove the end panel on the Input side only, four Phillips screws.

3) Slide both pieces of silver trim off the heat sink.

4) Remove the top cover; it will be attached with a cable so unplug the connector.  For most component repairs on the MAIN PCB, the entire PCB must be removed from the heat sink.

Note the 4 channel output MOSFETS (IRF6645) is an exception; skip to steps 1-5 below.

5) Remove the Output end panel, five Phillips screws.

6) Remove the terminal screws to the Power connections, and top row only of the speaker terminals.

7) Remove the remaining four Phillips screws on the bottom of the heat sink. There are two nuts which may spin on the machine screws; look at the top of the PCB.

8) Remove all Phillips screws holding the Aluminum transistor clamps on; remove the clamps.  Two screws holding two additional TO-220 devices should be removed.

9) Remove the Amplifier PCB; six Philips screws. The PCB will then pull straight up and off the MAIN PCB.

10) Slide the complete PCB out of the heat sink channel.

Access to the (8) output MOSFETS Q3A, Q4A, Q5A, Q6A, Q2, Q8, Q13, Q14

1) Follow steps 1~4 above.

2) Remove the two centermost screws on the bottom of the heat sink.

3) Follow step #9 above to remove the Amplifier PCB

4) Remove the gray heat sink from the PCB by grasping and pulling it straight out  it is only held on by friction from the white heat sink compound.

5) The (8) output MOSFETS are underneath the rectangular insulator on the PCB.

Amplifier Troubleshooting Guide

Status LED on Amplifier not Lit - Head Unit (Source) Turned ON Verify:

A. Remote turn-on wire from source to amplifier has proper voltage

B. Power (B+) connections at amplifier, terminal blocks, and battery are secure

C. Ground (GND) connections at amplifier and vehicle chassis are secure

D. Battery B+ fuse (if used) is OK

E. Amplifier fuse is OK

F. B+ at battery and B+ at amplifier has proper voltage

Status LED’s Lit, No Output from Speakers in Normal Operating Condition Verify:

A. RCA cables from amplifier to source are securely connected

B. Volume adjustment on amplifier is correctly adjusted

C. Source is ON and playing

Engine Noise From Speaker(s)

Turn source OFF, Disconnect RCA cables at amplifier. If noise stops, check equipment & cables leading to amplifier.

Verify:

A. RCA cables are of good quality with no breakage to internal shields

B. RCA cables from source to amplifier are not run alongside any power cables

Amplifier Output Distorted Music

Verify:

A. Source output music to amplifier is not distorted

B. Source output sensitivity is correctly adjusted

Amplifier Shuts Down, Green LED’s are Lit - Amplifier is in Thermal Protection Mode

Verify:

A. Amplifier is mounted with adequate air circulation around heatsinks or vents

B. Amplifier is not mounted under carpet or sealed enclosure

C. Speakers meet correct impedance for application (mono or stereo hookup)

 Amplifier Does Not Turn ON, and Red LED is Lit Amplifier (and not Connected to a Shorted Speaker)

Verify:

A. Speaker crossover (if used) is not defective.

ROLSEN C2131 CRT TV - CIRCUIT DIAGRAM - STP4NK60ZFP - UC3842AN

COLOR TV SCHEMATIC USING ICs: TDA8944J (Input Selector) – TDA9353PS/N2 (Syscon Chroma Jungle) – TDA8357J (Vertical Scan Output) – TDA6102 or TDA6107Q (Video Output) – UC3842AN (SMPS control) – STP4NK60ZFP (SMPS SWITCHING)

ROLSEN COLOR TV C2131

SCHEMATIC

PWB

Microlab X3-5.1- Microlab M8004.1 – Microlab M1300 – SCHEMATIC DIAGRAM

Circuit Diagrams to Microlab M 800 4.1 – M1300 – X3-5.1 _ Used ICs: TDA7265- 4558 – TDA2030A _ TC4053

MICROLAB M 800 4.1 SCHEMATIC

MICROLAB X 3-5.1 SCHEMATIC

MICROLAB M1300 SCHEMATIC

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