Tips and Tricks for Fixing Your Philco TV PH21M SS
Philco TV PH21M SS: A Reliable and Affordable TV Model
If you are looking for a TV that offers good performance, durability and value for money, you might want to consider the Philco TV PH21M SS model. This TV has a 21-inch screen size, a flat CRT display and a stereo sound system. It also has several features that make it easy to use and enjoy, such as remote control, teletext, sleep timer and parental lock.
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In this article, we will provide you with some information about the Philco TV PH21M SS model, such as its specifications, parts, schematics and service manual. We will also give you some tips on how to repair and troubleshoot your device in case of any problems.
Philco TV PH21M SS Specifications
The Philco TV PH21M SS model has the following specifications:
Screen size: 21 inches
Display type: Flat CRT
Resolution: 640 x 480 pixels
Aspect ratio: 4:3
Sound system: Stereo
Power consumption: 75 W
Dimensions: 540 x 450 x 480 mm
Weight: 18 kg
Philco TV PH21M SS Parts
The Philco TV PH21M SS model consists of several parts that work together to provide you with a good viewing experience. Some of the main parts are:
PCI Principal: This is the main circuit board that controls the functions and operations of the TV. It contains several components, such as ICs, capacitors, resistors, transistors and diodes.
PCI Cinescopio: This is the circuit board that connects the PCI Principal to the CRT display. It contains components that regulate the voltage, current and frequency of the display.
Flyback: This is the transformer that generates the high voltage needed for the CRT display. It also provides horizontal deflection and focus signals.
Tuner: This is the device that receives and selects the TV channels. It converts the RF signals into IF signals that can be processed by the PCI Principal.
Trafo Chopper: This is the transformer that converts the AC input voltage into DC output voltage for the TV. It also provides overcurrent and overvoltage protection.
PTC: This is a thermistor that protects the TV from power surges. It increases its resistance when the temperature rises, limiting the current flow.
Speaker: This is the device that produces the sound output for the TV. It converts the electrical signals into sound waves.
Cabinet: This is the outer casing that covers and protects the internal parts of the TV. It also provides ventilation and aesthetic appeal.
Philco TV PH21M SS Schematics
The schematics of the Philco TV PH21M SS model are diagrams that show how the parts and components of the TV are connected and arranged. They help you to understand how the TV works and how to repair it if necessary. You can find the schematics of the Philco TV PH21M SS model online or in the service manual.
Here are some examples of the schematics of the Philco TV PH21M SS model:
Schematic of PCI Principal
Schematic of PCI Cinescopio
Schematic of Flyback
Philco TV PH21M SS Service Manual
The service manual of the Philco TV PH21M SS model is a document that provides you with detailed instructions on how to service and maintain your TV. It contains information such as parts list, exploded view, wiring diagram, troubleshooting guide, adjustment procedures and safety precautions. You can download the service manual of the Philco TV PH21M SS model online or contact the manufacturer for a copy.
Here are some examples of the contents of the service manual of the Philco TV PH21M SS model:
Parts List
Exploded View
Wiring Diagram
Tips and Tricks for Fixing Your Philco TV PH21M SS
If you encounter any problems with your Philco TV PH21M SS model, you can try some of these tips and tricks to fix them:
Check if your power cord is plugged in properly and securely.
Check if your remote control has working batteries and is pointing at the TV sensor.
Check if your antenna or cable connection is loose or damaged.
Adjust your brightness, contrast, color and sound settings according to your preference.
Scan your channels again if they are missing or distorted.
Reset your TV to factory settings if you have changed any settings that cause problems.
Clean your TV screen and cabinet with a soft cloth and mild detergent.
Avoid placing your TV near heat sources, magnets, moisture or direct sunlight.
Contact a qualified technician if you see sparks, smoke or hear unusual noises from your TV.
Conclusion
The Philco TV PH21M SS model is a reliable and affordable TV model that offers good performance, durability and value for money. It has a 21-inch screen size, a flat CRT display and a stereo sound system. It also has several features that make it easy to use and enjoy, such as remote control, teletext, sleep timer and parental lock.
In this article, we have provided you with some information about the Philco TV PH21M SS model, such as its specifications, parts, schematics and service manual. We have also given you some tips on how to repair and troubleshoot your device in case of any problems. We hope you have found this article helpful and informative.
Philco TV PH21M SS Troubleshooting Guide
Sometimes, you may encounter some issues with your Philco TV PH21M SS model that prevent it from working properly. In this section, we will provide you with some common problems and their possible solutions. Before you attempt any troubleshooting, make sure you unplug your TV from the power source and wait for a few minutes.
No Power
If your Philco TV PH21M SS model does not turn on at all, you may have one of these problems:
The power cord is loose or damaged. Check if the power cord is plugged in securely and firmly into the TV and the wall outlet. If the cord is damaged, replace it with a new one.
The fuse is blown. Check if the fuse inside the TV is intact and not burned out. If the fuse is blown, replace it with a new one of the same rating.
The PTC is defective. Check if the PTC (thermistor) on the Trafo Chopper board is working properly. If the PTC is defective, replace it with a new one.
The power switch is faulty. Check if the power switch on the TV or the remote control is working properly. If the switch is faulty, replace it with a new one.
No Picture
If your Philco TV PH21M SS model has no picture but has sound, you may have one of these problems:
The brightness or contrast settings are too low. Adjust your brightness or contrast settings according to your preference.
The video input source is incorrect. Check if you have selected the correct video input source for your TV, such as antenna, cable or DVD player.
The CRT display is defective. Check if the CRT display on your TV is working properly. If the CRT display is defective, replace it with a new one.
The Flyback transformer is faulty. Check if the Flyback transformer on the PCI Principal board is working properly. If the Flyback transformer is faulty, replace it with a new one.
No Sound
If your Philco TV PH21M SS model has no sound but has picture, you may have one of these problems:
The volume or mute settings are too low or on. Adjust your volume or mute settings according to your preference.
The audio input source is incorrect. Check if you have selected the correct audio input source for your TV, such as antenna, cable or DVD player.
The speaker is defective. Check if the speaker on your TV is working properly. If the speaker is defective, replace it with a new one.
The IC TDA7266SA or IC STV8172A are faulty. Check if the IC TDA7266SA or IC STV8172A on the PCI Principal board are working properly. If either of them are faulty, replace them with new ones.
Philco TV PH21M SS Adjustment Procedures
After you have repaired or replaced any parts of your Philco TV PH21M SS model, you may need to adjust some settings to ensure optimal performance and quality. In this section, we will provide you with some adjustment procedures for your TV, such as geometry, convergence, white balance and sound. Before you perform any adjustments, make sure you have the following tools and equipment:
A digital multimeter
A color bar generator
A non-metallic screwdriver
A remote control
Geometry Adjustment
The geometry adjustment is to correct the shape and position of the picture on the screen. To perform the geometry adjustment, follow these steps:
Connect the color bar generator to the TV and select the video input source.
Press the MENU button on the remote control and select the SERVICE option.
Enter the password 8500 to access the service mode.
Select the GEOMETRY option and press OK.
Use the UP and DOWN buttons to select the parameter you want to adjust, such as HSIZE (horizontal size), VSIZE (vertical size), HPOS (horizontal position), VPOS (vertical position), PINC (pincushion), PCOR (pincushion correction), KEY (keystone), TRAP (trapezoid) or PARA (parabola).
Use the LEFT and RIGHT buttons to change the value of the parameter until you get a satisfactory picture.
Press OK to save the changes and exit the service mode.
Convergence Adjustment
The convergence adjustment is to align the red, green and blue colors on the screen. To perform the convergence adjustment, follow these steps:
Connect the color bar generator to the TV and select the video input source.
Press the MENU button on the remote control and select the SERVICE option.
Enter the password 8500 to access the service mode.
Select the CONVERGENCE option and press OK.
Use the UP and DOWN buttons to select the color you want to adjust, such as RED or BLUE.
Use the LEFT and RIGHT buttons to move the cursor to the point you want to adjust on the screen.
Use the VOL+ and VOL- buttons to align the selected color with the green color.
Repeat steps 5 to 7 for all points on the screen until you get a satisfactory picture.
Press OK to save the changes and exit the service mode.
White Balance Adjustment
The white balance adjustment is to adjust the color temperature and brightness of the picture. To perform the white balance adjustment, follow these steps:
Connect the color bar generator to the TV and select the video input source.
Press the MENU button on the remote control and select the SERVICE option.
Enter the password 8500 to access the service mode.
Select the WHITE BALANCE option and press OK.
Use a digital multimeter to measure the voltage across TP1 (red cathode) and TP2 (green cathode) on
the PCI Cinescopio board. The voltage should be around 180 V.
If not, use a non-metallic screwdriver to adjust VR1 (screen) on
the Flyback transformer until you get 180 V.
Select R-CUT (red cut-off) or B-CUT (blue cut-off) on
the service mode menu and use
the LEFT and RIGHT buttons to change their values until you get a pure white picture with no color cast.
Select R-DRV (red drive) or B-DRV (blue drive) on
the service mode menu and use
the LEFT and RIGHT buttons to change their values until you get a balanced gray scale picture with no color cast.
Select G-CUT (green cut-off) or G-DRV (green drive) on
the service mode menu and use
the LEFT and RIGHT buttons to change their values until you get a satisfactory picture with natural colors.
Press OK to save
the changes and exit
the service mode.
Sound Adjustment
The sound adjustment is to adjust
the volume, balance, bass, treble and surround sound of
the TV. To perform
the sound adjustment, follow these steps:
Press
the MENU button on
the remote control and select
the SOUND option.
Select VOLUME or BALANCE on
the sound menu and use
the LEFT and RIGHT buttons to change their values according to your preference.
Select BASS or TREBLE on
the sound menu and use
the LEFT and RIGHT buttons to change their values according to your preference.
Select SURROUND on
the sound menu and use
the LEFT and RIGHT buttons to turn it ON or OFF according to your preference.
Select EXIT on
the sound menu and press OK to exit
the sound menu.
Conclusion
The Philco TV PH21M SS model is a reliable and affordable TV model that offers good performance, durability and value for money. It has a 21-inch screen size, a flat CRT display and a stereo sound system. It also has several features that make it easy to use and enjoy, such as remote control, teletext, sleep timer and parental lock.
In this article, we have provided you with some information about
the Philco TV PH21M SS model, such as its specifications, parts, schematics, service manual and adjustment procedures. We have also given you some tips on how to repair and troubleshoot your device in case of any problems. We hope you have found this article helpful and informative.
Conclusion
The Philco TV PH21M SS model is a reliable and affordable TV model that offers good performance, durability and value for money. It has a 21-inch screen size, a flat CRT display and a stereo sound system. It also has several features that make it easy to use and enjoy, such as remote control, teletext, sleep timer and parental lock.
In this article, we have provided you with some information about
the Philco TV PH21M SS model, such as its specifications, parts, schematics, service manual and adjustment procedures. We have also given you some tips on how to repair and troubleshoot your device in case of any problems. We hope you have found this article helpful and informative. ca3e7ad8fd