Panasonic CT-32SX31CE Service Notes, Leadless Chip Component surface mount, Component Removal

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Service Notes

Note: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose.

Leadless Chip Component (surface mount)

Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the board to mount standard transistors or diodes. Some chips capacitor or resistor board solder pads may have holes through the board, however the hole diameter limits standard resistor replacement to 1/8 watt. Standard capacitor may also be limited for the same reason. It is recommended that identical components be used.

Chip resistor have a three digit numerical resistance code - 1st and 2nd significant digits and a multiplier. Example: 162 = 1600 or 1.6kΩ resistor, 0 = 0Ω (jumper). Chip capacitors generally do not have the value indicated on the capacitor. The color of the component indicates the general range of the capacitance.

Chip transistors are identified by a two letter code. The first letter indicates the type and the second letter, the grade of transistor.

Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anode or common cathode. Check the parts list for correct diode number.

Component Removal

1.Use solder wick to remove solder from component end caps or terminal.

2.Without pulling up, carefully twist the component with tweezers to break the adhesive.

3.Do not reuse removed leadless or chip components since they are subject to stress fracture during removal.

Chip Component Installation

1.Put a small amount of solder on the board soldering pads.

2.Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds.

TYPE

Chip Components

SOLDER

 

GRADE

 

CAPS

 

 

 

 

c

 

 

b

 

 

 

 

e

CAPACITOR

 

 

TRANSISTOR

 

1ST DIGIT

2ND DIGIT

 

COMMON

CATHODE

MULTIPLIER =1600 = 1.6k

ANODES

SOLDER

 

CAPS

MH DIODE

RESISTOR

 

How to Replace Flat-IC

- Required Tools -

•

Soldering iron

•

De-solder braids

•

Iron wire or small awl

•

Magnifier

1.Remove the solder from all of the pins of a Flat-IC by using a de-solder braid.

De-Solder

Braid

Flat-IC

2.Put the iron wire under the pins of the Flat-IC and pull it in the direction indicated while heating the pins using a soldering iron. A small awl can be used instead of the iron wire.

Iron

Wire

Awl

 

Soldering

Soldering

Pull

Iron

 

Iron

 

 

3.Remove the solder from all the pads of the Flat-IC by using a de-solder braid.

Soldering

Iron

De-Solder

Braid

Flat IC

4.Position the new Flat-IC in place (apply the pins of the Flat-IC to the soldering pads where the pins need to be soldered). Properly determine the positions of the soldering pads and pins by correctly aligning the polarity symbol.

Polarity Symbol

5.Solder all pins to the soldering pads using a fine tipped soldering iron.

Solder

Soldering

Iron

 

6.Check with a magnifier for solder bridge between the pins or for dry joint between pins and soldering pads. To remove a solder bridge, use a de-solder braid as shown in the figure below.

 

De-Solder

 

Braid

Solder

Soldering

Bridge

Iron

 

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Contents Main Manual NA8MLImportant Safety Notice Schematics, Voltages and waveforms Service Notes Chip Component InstallationHow to Replace Flat-IC Leadless Chip Component surface mountProcedure Horizontal Oscillator Disable CircuitPreparation Receiver Features Remote Control Sensor Location of Controls ReceiverQuick Reference Control Operation Controls InsideLocation of Controls Remote Disassembly for Service Important Notice Back Cover Removal Screws at top edge Screw by Antenna jacks Screw at lowerRight corner Left corner ScrewChassis Service Adjustment Procedures Source Voltage Chart140.0V B+ Voltage Confirmation High Voltage CheckWhen the CRT or the Yoke is Replaced Purity and Convergence ProcedureVertical Raster Shift Adjustment Only for Purity Adjustment Final Convergence Procedure see FigDynamic Corvergence Adjustment Service Adjustments Electronic Controls procedureXV Adjustmentprecise adjustment DAF AdjustmentYH Adjustment VR2 for Vertical dynamic convergence Permalloy Convergence Corrector Strip Part No FMK014ZZConvergence Magnets and Wedges Location Serviceman Mode Electronic Controls Quick Entry to Serviceman ModeTo toggle between Aging and Serviceman modes Exiting the Serviceman ModeFor Adjustments Press Volume Up/Down onRemote Control to adjust Press Channel Up/Down onGeometry Adjustments Default Level MTS Adjustment Default LevelPIP Adjustment Default Level Options Adjustment Default Level Option Adjustment Default Level To Check Purity Helpful Hints Entering Serviceman Mode Back-Open MethodPress Recall again to select desired field Instructional Flow Chart for Serviceman Mode Press Action + Volume Up Simultaneously on ReceiverCUT-OFF Adjustments PIP Adjustments Service Adjustments Electronic Controls Sub-Contrast AdjustmentTint/Color Adjustment PIP Sub-Contrast Adjustment P03Color Temperature Adjustment B/W Tracking Complete Adjustment±0.05V DC 170±2V DCService Adjustments Electronic Controls, Correction Adjustment D02 MTS Circuit AdjustmentsInput Level Adjustment M00 Stereo Separation Adjustment M01 & M02Clock Adjustment S07 Service Adjustments Mechanical ControlsFocus part of T551

CT-32SX31E, CT-36SX31E, CT-32SX31CE, CT-32SX31UE, CT-36SX31CE specifications

The Panasonic CT-36SX31UE, CT-36SX31CE, CT-32SX31UE, CT-32SX31CE, and CT-36SX31E are part of Panasonic's renowned line of CRT (cathode-ray tube) televisions designed to deliver excellent picture quality and robust performance. These models are known for their advanced features, making them a popular choice for home entertainment enthusiasts.

One of the key features of these televisions is their large screen sizes, with the CT-36SX31 models boasting a striking 36-inch display. The CT-32SX31 models, while slightly smaller at 32 inches, offer an equally immersive viewing experience. The screens are designed with high-resolution capabilities that enhance color depth and clarity, allowing viewers to enjoy a lifelike picture.

Panasonic has incorporated various technologies into these models, such as the Digital Comb Filter, which significantly reduces image distortion and enhances the overall picture quality. This feature allows for clearer images with improved color accuracy, making it ideal for watching movies and sports. Additionally, the models are equipped with a 3D Y/C separation processing feature that further elevates the quality of video playback by enhancing the precision of image separation.

Audio quality is also a focal point of these models. The television sets come with built-in speakers, providing powerful sound output that complements the stunning visuals. With features like surround sound capability, viewers can enjoy an enriched audio experience that brings movies and shows to life.

Connectivity is another essential aspect of these televisions. They are equipped with multiple input options, including composite, S-Video, and component inputs. This variety allows users to connect various devices like DVD players, gaming consoles, and cable boxes, facilitating a versatile entertainment setup.

Durability and reliability are characteristic of Panasonic products, and these models are no exception. Built with quality materials, they are designed to last, ensuring that consumers receive value for their investment.

In summary, the Panasonic CT-36SX31UE, CT-36SX31CE, CT-32SX31UE, CT-32SX31CE, and CT-36SX31E are standout CRT televisions renowned for their large screens, high-resolution image quality, excellent sound output, and robust connectivity options. While CRT technology has since transitioned to flat-panel displays, these models remain a testament to Panasonic's commitment to quality and performance in home entertainment.
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