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Panasonic Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
PANASONICTC14A10
Image disabled horizontally and vertically closed power supply oscillatingCapacitor c 817 of 473nf dryReplace with 1μF 400vELETRONICA COLARES
PANASONICTC20A12
After 1 minute it turns off and turns on againD1105 shorted (dz7.5v)Note: heating IC 1202 and IC 851vagnernardes
PANASONICTC29Z99L
GP41
556 diode shorted out, replaced, the TV started working again, but with excess width and cushion effect. Tsound's no point in trying to fix it using service mode. (This was really hard to solve, it took me 3 weeks researching!)The smd transistor q701 that makes the pincushion amplifier, even when measuring normally, was bad and the resistor at its gate terminal was altered (the transistor is 2sk2099 and the r is 64 r)alexsts
PANASONICTC20RM10L
Horizontal shaking and losing widthChanged resistor r502genilson
TV PANASONIC29KL25
This TV arrived at the workshop with normal sound but with a horizontal scratchChecking the circuit I found cap c 563 330k 250v as I didn't find the same value I associated 4 of 100kAnd defect resolved.BF.COLATINO
PANASONICTV20A10
When turned on, the protection is activated. Tsound is no sound and no image.Diode d402 shorted at the vertical output.Rubens
TV PANASONIC14RM15L
This TV was completely stopped and when I opened it and turned it on, I noticed that the r-850 resistor was getting very hot, causing the q-850 to short out, but when I replaced it, everything remained the same, not even the std-by LED lit up.All vertical voltages are present except pin 5 which has 0v and should have 28v and pin 6 which has 15v and according to the service manual it should have 29v.Solved, it was the microBF.COLATINO
TV PANASONICTC20C20
This TV has no color, I checked capacitors near the do-it-all, resistors and everything, and it didn't solve itSolved, it was the tda4665.BF.COLATNO
TV PANASONIC14RM151
I received this TV when it was stopped, and when I turned it on I noticed that the r-850 resistor was getting very hot.The cause was the transistor q-850 shorted, I replaced this tr and even so the device still stopped, I noticed that in the lamp in series the device showed consumption and I found the zener d-883 shorted, after replacing the device the LED turned on std-by and it started to work on and off and with the vertical closed, I tested the entire vertical circuit and even replaced the vertical output but the defect persisted..Resolved, it was the micro.BF.COLATNO
PANASONICTC 20C6
TV oscillates and returns to stand by. activates protectionDrop q503 . if atv works replace d528D528 shortedsamuel leite
TV PANASONICTC14RM15L
This TV works all blurred as if it were the socket and turns off.Defective an15525 vertical output.Replaced and resolved.BF.COLATNO
TV PANASONIC29KL04.
Q753 shorted from emitter to collector. r768 open, 10r 2w.Defect in correcting the cushion effect. pin cushion circuit. (solved)BF.COLATINO
TV PANASONICTC 20C7
Side laneThe defect was in two electrolytics that are next to the power supply's chooper transformer. values ​​47mf/16voltsBF.COLATINO
PANASONICTC1410
Does not turn on, in the c823 it measures shortD817 shortedBruske
PANASONIC21FX32L
White screen with linesBroken print on rgb +b lineluiz gonzaga da silva
TV PANASONIC29KL04
Doesn't startHorizontal output shorted. When replacing it with another one, it heated up too quickly to the point of burning your finger if left standing on top of it. Checking a little more, I found d 556 with a leak.Just replaced it and stopped testing and everything was fine.BF.COLATINO
TV PANASONIC14 TC14C4
White lines at the top of the screenI changed the cp px of the 100/35 volt vertical TDA.BF.COLATINO
PANASONIC14R12
Turning offThe TV turns on but passes for a few minutes and turns off, the protection circuit comes into action, turning off the TV.Capacitor c 519 of 333 mf 160 volts sem carga.BF.COLATINO
PANASONICTC29A11
BR2
Turns off a few seconds after power onX-ray actingIn this case the defect was in the vertical ci, it activated the x-ray protection, pin 36 of IC 601. This ci (vertical) was replaced and the TV started working normally againdias
PANASONICSA-AK78
F61Tsound is cold solder on all relays. if it's normal, change the stk-470-050aureliopr