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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 1049
Panasonic
CN677R
Blows lop tr at sw on
Line dr tfmr faulty - could be dry joints on it
14-09-04
Panasonic
CN677R
Blows lop transistor
BU2508D subst for the 2SD1175 fitted seems to have cured it
14-09-04
Panasonic
CN677R
Tune store inop
D1129 o/c
14-09-04
Panasonic
Euro 1
Black lines appear in txt & osd boxes when heated
IC1501 DPU2553 deflection proc chip
14-09-04
Panasonic
Euro 1
Brigtness increases until a white raster is present
DPU2553 deflection proc chip
14-09-04
Panasonic
Euro 1
Col int or absent
X1656 osc Xtal
14-09-04
Panasonic
Euro 1
COMES ON NO S/V , THEN GOES TO SBY AFTER A FEW SECS
R561 O/C BECAUSE IC561 TDA8175 FIELD CHIP SC
14-09-04
Panasonic
Euro 1
Dark areas of pic become dotted - very int
IC1661 DT12223 faulty (Transient improvement chip)
14-09-04
Panasonic
Euro 1
Dark, blank raster with no sound
Nicam chip IC1401 MSP2410
14-09-04
Panasonic
Euro 1
Dead
R628 470k o/c - feeds pin 5 TDA4601 IC611 chopper control chip
14-09-04
Panasonic
Euro 1
Dead - st/by led lights briefly at sw on
Replaced all 4 elect caps in psu
14-09-04
Panasonic
Euro 1
Field - top compression
FOP chip TDA8175 IC611& fit diode mod
14-09-04
Panasonic
Euro 1
Field collapse
IC561 TDA8175, C558 2200µ 50v; C563 220µ 50v
14-09-04
Panasonic
Euro 1
Field collapse - failure of FOP chip TDA8175 IC611
Fit MA2100 diode in place of link B51 - cathode to D562 & R566 Kit pt no TZ55EK001
14-09-04
Panasonic
Euro 1
Field top foldover
IC561 TDA8175 fails due to spikes - mod kit TZS5K002 (diode to replace link B51 & new IC)
14-09-04
Panasonic
Euro 1
INT DOTTED EFFECT IN AREAS OF DARK PIC
IC1661 DT12223 ( TRANSIENT IMPROVEMENT CHIP )
14-09-04
Panasonic
Euro 1
Int height & width drastic increases
MCU2600 IC651 master osc chip
14-09-04
Panasonic
Euro 1
INT LOSS OF SIGNALS
TUNER D/J inside Tuner on Prescaler chip
14-09-04
Panasonic
Euro 1
Int lost signals
Tuner faulty
14-09-04
Panasonic
Euro 1
Line drive cuts out aft 30 secs - pic & sound ok in this period
If aerial dis'd, set would work continually; IC1401 MSP2410 Nicam chip
14-09-04
Panasonic
Euro 1
Line pairing at bottom of screen when warm
Replace D508 in FOP - MA723TA5
14-09-04
Panasonic
Euro 1
LOSES TUNING
TUNER UNIT
14-09-04
Panasonic
Euro 1
Nicam sound low and distorted & int only 1 chan - ok in Mono
IC1431 AMU2481 multi sound proc chip
14-09-04
Panasonic
Euro 1
No Blue
R3374 100k drive biassing res o/c
14-09-04
Panasonic
Euro 1
No on screen menus - just random characters
Txt works ok; TPU2735 Txt chip faulty
14-09-04
Panasonic
Euro 1
NO OSD
TPU2735 TEXT PROCESSOR
14-09-04
Panasonic
Euro 1
No sound or pic - Psu ok . Q1101 2SC3940 oc , R110
C1102 sc 0.1uF surface mount cap .
14-09-04
Panasonic
Euro 1
No sound/pic
No 10v supply to AV sw chips; Q1011 2SC3940 o/c, R1102 4R7 o/c caused by C1102 0µ1 sm decoupling cap
14-09-04
Panasonic
Euro 1
No sound/pic - reverts to st/by aft few secs
R561 o/c in supply to FOP chip IC561 Pt no ERQ12HJ1R5
14-09-04
Panasonic
Euro 1
ON SCREEN MENUS COUPT
TPU2735 TEXT PROCESSOR IC.
14-09-04
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Last SM download : IBM GC28-6399-2 COBOL Compiler and Library Version 2 Programmers Guide Jul72
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