Panasonic Repair Tips

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Make	Model	Symptom	Problem	Solution
PANASONIC	TC-14C2/20C2	Image shakes when adding volume	16v power supply low and r863
PANASONIC	TC-14C2/20C2	Image very bright and does not darken	19
PANASONIC	TC20C6	Inoperative, relay knocking	Open r802 or r803 (470k)
PANASONIC	TC-29V50B	Burning of ic802(str), d184, c812, q804	In the first production batches the resistor r841 was assembled very close to the heatsink, which will cause cold solder heat dissipation and oxidation at its terminals. as this resistor is located between the drive and the base of the power transistor, this bad contact will cause IC802(str), d814, c812, q804	Solution: 1) after the burned components are replaced, the resistor r841 must be removed, checking that its value has not been replaced, if it has been, it must be replaced. if its value is ok, its terminals should be sanded and resoldered into its position on the board. 2) please take this countermeasure for all devices that pass through an authorized workshop for maintenance, whether the device is presenting or not problems at the power supply.
PANASONIC	TX 25MD3E Euro 2M	No image dark	Failure	Bobine l202 na f. i. e tuner
PANASONIC	SA AK 27	Not for tuning, does not identify CD, does not produce sound	R521 = 4.7r line of minus 30 volts	Sub r 521 = 4,7 r
PANASONIC	SA AK 27 Hi Fi	Not for tuning, does not identify CD, does not produce sound	R521 = 4.7r line of minus 30 volts	Sub r 521 = 4,7 r
PANASONIC	TV111	Queima do stk73907-t		1-add thermal paste, 2. add a 130pf / 3.6MΩ 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 code 10nf capacitor. ecqm4103jzw in parallel with c805. solder the capacitor underneath the print and glue it with silicone. 4. Add an insulated wire jumper between point A13 and tuner ground.
PANASONIC	TC-21V50B	Queima do stk73907-t		1-add thermal paste, 2. add a 130pf / 3.6MΩ 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 code 10nf capacitor. ecqm4103jzw in parallel with c805. solder the capacitor underneath the print and glue it with silicone. 4. Add an insulated wire jumper between point A13 and tuner ground.
PANASONIC	TC-20G7	Queima do stk73907-t		1-add thermal paste, 2. add a 130pf / 3.6MΩ 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 code 10nf capacitor. ecqm4103jzw in parallel with c805. solder the capacitor underneath the print and glue it with silicone. 4. Add an insulated wire jumper between point A13 and tuner ground.
PANASONIC	TC 20A12	Turns off after a few minutes	C 520, de 220/6,3v
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.