Panasonic CT-27SF25W
March 3, 2025, 10:58 pm
March 13, 2025, 2:58 pm
Summary
SuperFlatâ„¢ Data Grade Picture Tube with Black Screen and Invar Mask, with Twin Drive Sound System
SuperFlats were high-end consumer sets also marketed as GAOO (pronounced "gah-oh"), Japanese for "King of Pictures". Has a SuperFlat M-class picture tube, and very good sound due to 2-way (dual-driver) stereo speakers.
Manuals
Mods & Repair Guides
Notes
This set has VM you cannot turn off in the menu or service menu. The only way to disable it is to unplug the connection C2 on the neckboard which connects to the VM coil.
Repair Notes
One example would not turn on and made a tic-tic-tic sound due to ceramic capacitor C572 having gone open, 470pF 2kV. There was then vertical collapse which was resolved after replacing borderline high ESR electrolytic C455, 2200uf 35v. This same set also had also lost corner focus.
Gallery

























Specifications | |
---|---|
Brand: | Panasonic |
Manufacturer: | Panasonic |
Model: | CT-27SF25W |
Series: | GAOO / SuperFlat |
Viewable Size: | 27" |
Inputs: | Composite, S-Video, RF |
Native Resolutions: | 240p, 480i |
Horizontal Scan Range: | 15 kHz |
Vertical Scan Range: | 60 Hz |
Formats: | NTSC |
Aspect: | 4:3 |
Adjustments: | OSD Customer Controls, OSD Service Menu |
Horz. Output Transistor: | D2539 |
Vertical Output IC: | LA7845N |
Jungle: | Panasonic, AN5308NK |
Comb Filtering: | 2-Line Digital |
Comb Filter IC: | Panasonic, MN8284 |
Flyback: | KFT4AB139F |
Focus Type: | Single |
Tube: | Panasonic , M68LNK161X |
Heater Voltage: | 6.3v |
Mask: |
Slot, Invar
![]() |
Tint: | Dark |
Removable Glare Film: | No |
Yoke: | KDY4UW739F |
Yoke Horz. Resistance: | 1.7 ohm |
Yoke Vert. Resistance: | 8.31 ohm |
Speakers: | Stereo, 10W x 2, Dome, Dual Driver |
Remote: | EUR11170 |
Chassis: | AEDP323 |
Application: | Consumer |
Cabinet Material: | Plastic |
Launched: | 1998 |
MSRP: | 599 USD |
Country of Manufacture: | Mexico |
Market: | North America |
Power Standard: | 120v |
Mounting: | Table Surface (Standard) |
Degaussing: | Automatic on Power-on |
Tag: | Needs Service Manual, Needs Measurements |