Symptom

Good picture

No sound

Dotted lines or stripes

Solutions

•Press ü + to increase the volume level.

•Press Û to cancel the muting.

•Do not use a hair dryer or other equipment near the TV.

•Adjust the antenna direction for minimum interference. Contact a Sony dealer for advice.

Possible cause

•The volume level is too low.

•The sound is muted.

•There is local interference from cars, neon signs, hair dryers, power generators, etc.

Troubleshooting (continued)

SymptomSolutions

Lines moving across the

• Use the fine tuning (FINE) function.

TV screen.

(page 10)

The uindicator on your • Contact your nearest Sony service

TV flashes red a number center. (page 17) of times between

3-second intervals.

TV cabinet creaks.

—

Possible cause

• There is interference from

external sources, e.g.,

heavy machineries, nearby

broadcast station.

• Your TV may need service.

• Changes in room

temperature sometimes

make the TV cabinet

expand or contract,

making a noise. This does

not indicate a malfunction.

KV-PF21M70/TF21M61/TF21M90/TF21P11RM-952

– 16 –

Double images or “ghosts”

No color

Abnormal color patches

•Use a highly directional antenna.

•Use the fine tuning (FINE) function. (page 10)

•Adjust the antenna direction. Contact a Sony dealer for advice.

•Turn off or disconnect the booster if it is in use.

•Press SELECT until “COLOR” appears on the screen, then press + or – to adjust the color level. (page 15)

•Press SELECT until “COL SYS ” appears on the screen, then check the color system setting (usually set this to “AUTO”). (page 9).

•Adjust the antenna direction. Contact a Sony dealer for advice.

•Keep external speakers or other electrical equipment away from the TV. Do not move the TV while the TV is turned on. Press U (main power) on the TV to turn off the TV for about five minutes, then turn it on again.

•Broadcast signals are reflected by nearby mountains or buildings.

•The antenna direction is inappropriate.

•Use of a booster is inappropriate.

•The color level setting is too low.

•The color system setting is inappropriate.

•The antenna direction is inappropriate.

•The magnetic disturbance from external speakers or other equipment, or the direction of the earth’s magnetic field may affect the TV.

A “boom” sound is heard when the TV is turned on.

—

• The TV’s demagnetizing

function is working. This

does not indicate a

malfunction.

continued

Additional Information 19

20Additional Information

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Sony KV-TF21M61, KV-TF21P11, KV-PF21M70 service manual Troubleshooting
Page 15 Page 17

KV-PF21M70, KV-TF21P11, KV-TF21M61 specifications

The Sony KV-TF21M61, KV-TF21P11, and KV-PF21M70 are iconic television models that hold a significant place in the history of consumer electronics. These CRT (cathode-ray tube) televisions were introduced during a time when home entertainment was evolving, showcasing Sony's dedication to delivering high-quality viewing experiences.

The KV-TF21M61 is known for its compact design and impressive image quality, featuring a 21-inch screen size that was perfect for small to medium-sized rooms. Equipped with Sony's advanced Trinitron technology, it delivers vibrant colors and sharp images, making it a favorite among viewers who appreciate clarity and detail. The television features a built-in tuner, allowing users to easily access various TV channels without the need for an external set-top box. The design includes multiple connectivity options, including standard composite inputs, offering versatility for connecting gaming consoles and DVD players.

Similarly, the KV-TF21P11 model carries forward Sony's commitment to exceptional picture quality. With anti-glare screens and enhanced viewing angles, this model ensures that viewers enjoy clear images from different positions in the room. Its user-friendly interface allows easy navigation through channel selections and picture adjustments. The model also includes stereo speakers, providing a richer audio experience that complements the stunning visuals.

On the other hand, the KV-PF21M70 is seen as an evolution of these models, featuring a larger display while retaining the core technological advancements of its predecessors. This unit incorporates Sony's Picture-in-Picture (PiP) feature, allowing users to watch two channels simultaneously or view external input while keeping an eye on live TV. This functionality enhances versatility and user engagement, making it a practical choice for avid viewers who don’t want to miss out on their favorite programs.

All three models are equipped with various sound enhancement features, including bass and treble controls, ensuring users can tailor their audio experience according to their preferences. The robust build quality and reliability typical of Sony products ensure that these televisions remain cherished items even as technology progresses and newer formats emerge.

Overall, the KV-TF21M61, KV-TF21P11, and KV-PF21M70 are more than just old CRT televisions; they represent a significant era in television technology, characterized by brilliant visuals, sound quality, and functional designs that laid the groundwork for modern home entertainment systems. These models remain a testament to Sony's pioneering efforts in the realm of consumer electronics.
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