Panasonic Repair Tips

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Make	Model	Symptom	Problem
PANASONIC	TC-20/29G9 / TC29A9 / TC-20/29G11 / TC-29A11	Volume increases and decreases alone / vertical scrolling / blurred characters.	Solve crystal x001.
PANASONIC	TC-14TR1	Sometimes it works, sometimes it doesn't.	Cause c-813 change. for a new one.
PANASONIC	20C6	Volume does not increase and the menu does not work.	Change the eprom and program.
PANASONIC	TCT-14TR1	Intermittent operation.	C-813 (1 µf 250 v)
PANASONIC	TVC-20C2	Unstable vertical	C-410 (0.1 µf)
PANASONIC	MOD-TC 14C1U	Symptom is just drizzle and the sound is loud and does not control any function	Cause -r882.330k open is on the memory board along with the tr q.881.
PANASONIC	TC-20/29G11 / TC-29A11	Does not turn on, without 9v power.	D602 in all devices submitted to authorized service, replace diode d602 with a jumper. If this diode opens, the device becomes inoperative.
PANASONIC	TC-20/29G9 / TC29A9 / TC-20/29G11 / TC-29A11	Volume increases and decreases alone / vertical scrolling / blurred characters.	Solve crystal x001.
PANASONIC	TC-20G7 / TC-21V50B	Queima do stk73907-t	Countermeasure: when replacing the ic801 code. stk73907-t the changes must be made as described below: 1. replace the printed circuit stk. Add thermal paste and attach it firmly to the heatsink. 2. add a 130pf / 3.6m capristor. code. exng131p365 between each ac line with cold ground. solder the capristors underneath the print and glue them with silicone or hot glue. 3. add a 10nf capacitor cod. ecqm4103jzw in parallel with c805. solder the capacitor underneath the print and glue it with silicone or hot glue. 4. Add an insulated wire jumper between point A13 and tuner ground.
PANASONIC	TC-29V60 / 33V60	Certain devices present a noise coming from the power supply circuit or the deflection yoke, this in turn can be noticed mainly when the television volume is low, in a silent external environment, it is noticed that the noise increases and decreases depending on the scenes lighter or darker.	Changing the power supply transformers t801 - ets39ag115ac t872 - ets29ak1w9ac 2) changing the deflection yoke this yoke cannot be a normal yoke available in stock, so for this change please contact ddg - 0800 55 9180. for information on the procedure to exchange this part.
PANASONIC	TC20C02	Retrace lines, screen with excessive brightness, flay-back focus control does not fully work, screen control cannot darken the screen, it only brightens it, and when you try to darken it using this setting, the screen is all blurred with green. channel indicator characters presenting inverted folding together with the same	Capacitor c519 - 4,7uf/450v aberto (seco)
PANASONIC	TODOS OS TV MODELOS QUE UTILIZAM O CHASSI MX3-R	Loss of tune after a few seconds	Procedures: a) access the service mode (note the values of the dacs). select functions b8 (for aft) and b9 (for rf agc) and change the values to the factory average values, b8 - 085 b9 - 040.( * ) b) check capacitors c121, c116, c112 and c111 , pin 27 - ic6001(rf-agc) and capacitors c122 and c127, pin 21 - ic1101(afc input). comments: (*) the values given for b8 and b9 in procedure a) cannot be used as standard values, but as average values as each TV has to be pre-adjusted later (the values serve only as a reference, in cases where the values are completely altered.)
PANASONIC	TC-14/20A8 / TC-14/20A9	Three to four retrace lines at the top of the screen. This symptom occurs when the memory (ic1102 - code s- 24c02adp) is changed or when the memory data is changed.	Enter service mode .chq3. and lower the vertical center .vc.
PANASONIC	CHASSI BR1L/BR1D -MODELOS TC-20G9 / TC-29A9 / TC-29G9	Problem detecting sap	Include the 820kΩ smd resistor r2212. This component is included on the printed circuit board.
PANASONIC	TV-14G7 TV-21G7	Loses color when playing tapes in places with high radio signal interference.	The video cassette image loses color in a certain place, even when a tape recorded in NTSC is inserted. the color disappears due to RF interference at the crystal frequency. modifications: 1) remove the mechanism and release the vcr plate from the chassis frame. 2) remove resistor r5601 and short circuit the area. If this doesn't work, do the items below: 3) desolder the c3053 capacitor. 4) insert the 3 pf smd capacitor c3002. 5) add the crystal vsxs0195 in position x3001.
PANASONIC	TV-21 / 14 G7	Changes on the power supply board phenomenon: fuse f801 blows.	Modification: 1-c882=0.047: remove capacitor c882 from its original position and solder it under the board between pins 2 and 4 of ic872 (str83159). Note: position the soldered capacitor under the board so that the capacitor is well away from the board, otherwise the capacitor may pick up interference from the AC power supply. 2-c884: change capacitor c884 from 220µ/16v to 10µ/16v. 3-c854: change capacitor c854 from 220µ/16v to 10µ/16v. 4-r878=3k9//33k: add a 33k resistor (1/5w) in parallel with r878(3k9). 5-r848=3k9//33k: add a 33k resistor (1/5w) in parallel with r848(3k9). 6-change the fuse f801 which is next to the main board selector, from 4a/125v (code ba1c40nu100) to a 4a/220v one (code xbav2c4r0tl35bs). 7- eliminate c844=0.033µ/1000v.
PANASONIC	PT-51G45U / PT-46G40U	The television turns off intermittently and none of the functions using the panel buttons or the remote control work. When unplugged and plugged in again, the device works for a while longer.	Resolder potentiometers r1933 and r1908 on board b. The potentiometer must be removed from the PCI and all glue on the PCI must be cleaned using a hot soldering iron, as the shutdown occurs due to glue conduction.
PANASONIC	TC14C6/TC20C6/TC14C7/TC20C7	Firstly, the vertical one is partially closed, and after the technical staff adjusts the vertical height, the device's on screen appears shifted downwards, being cut off at the bottom of the screen. When this defect occurs, the voltages at pin 5 of IC1101 and pin 5 of IC401 go to low level (the device is switched to 50Hz).	Replacement of capacitor c1160.
PANASONIC	TC-14C7 E TC-20C7	On Philips and JVC video cassettes with the video output in the NTSC (pure) system, the color does not reproduce correctly (the color is flickering).	Remove the 1.5m resistor r605.
PANASONIC	TC-29S10	Changes on the power supply board phenomenon: burnout of resistor r872 caused by fluctuations in mains voltage. (The TV screen may have a smaller image).	1- change resistor r872 to 2.7. to 1.5. 2- change the capacitor c884 from 220ƒÊf/16v to 10ƒÊf/16v