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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
U5
Int loss of line sync
TDA2579 IC501
14-09-04
Panasonic
U5
Int loss of pic
IC5002 SAA5240 on Txt pcb
14-09-04
Panasonic
U5
Line pairing for first few mins at sw on
C808 47µ 16v in psu
14-09-04
Panasonic
U5
Lines when chan changing & difficult to tune
Check IC171 SAB3035 & Xtal X171
14-09-04
Panasonic
U5
No col
TDA3562A col dec chip
14-09-04
Panasonic
U5
NO LUMINANCE FOR FIRST 30mins
LOPT DRY JOINTED
14-09-04
Panasonic
U5
No luminance for first half hour or just int
Dry joints LOPTx - you wouldn't believe it with your eyes!
14-09-04
Panasonic
U5
No pic
TDA3562A col dec chip
14-09-04
Panasonic
U5
No sound on one channel - intermittent.
1MR resistor under PCB from pin 18 of IC501 to chassis.
14-09-04
Panasonic
U5
No sound on teletext.
IC171 ( SAB3035 )
14-09-04
Panasonic
U5
No sound on Txt
IC171 SAB3035
14-09-04
Panasonic
U5
Slow startup of picture.
Drys on LOPTX.
14-09-04
Panasonic
U5
SQUEALS HT LOW AT 55v
LOPT INTERNAL SC
14-09-04
Panasonic
U5
Trips to st/by aft 1 sec
St/by volts low due to 1000µ smoother
14-09-04
Panasonic
U5N
Dead with whine
LOPTx u/s - code TLF14586F - check polarity of fback winding when refitting
14-09-04
Panasonic
U5N
Sound mutes for 5-20 secs on chan change
Suspect MAB8441-T005 micro but no longer available
14-09-04
Panasonic
U5N
Sound mutes too long when changing stations ( upto
MAB8441-T005 us ( NLA )
14-09-04
Panasonic
U5W
No pic, whining & "0" in display
HT present at LOPTr, no 26v as D852 RU3B was o/c
14-09-04
Panasonic
Z1
Bright pic with fb lines & dark shadow on lh side
C554 10µ 250v
14-09-04
Panasonic
Z1
No colour
TDA3565 decoder chip & adj apc control
14-09-04
Panasonic
Z1
No Start up.
Link J125 by tuner o/c joint.
14-09-04
Panasonic
Z1
Uncontrollable brill
TDA3565 decoder chip - pin 8 at zero (should be 2.3v)
14-09-04
Panasonic
Z1
Unstable pic on high brill
C551 4µ7 160v
14-09-04
Panasonic
Z1
Varying lum when heated
Q303 2SC2636
14-09-04
Panasonic
Z1 Chassis
Dead - no secondary volts from psu
R811 current sampling res 0R56 hi res (misprint in cct gives value as 56R)
14-09-04
Panasonic
Z1 Chassis
Dead with whine from psu
D854 R2G prot diode in 103v line s/c - IC801 STR55041-M chopper chip faulty
14-09-04
Panasonic
Z1 Chassis
No colour
DL601 Chroma delay line
14-09-04
Panasonic
Z1 Chassis
Servicing the Panasonic Z1 Chassis
See TV Mag March 1996
14-09-04
Panasonic
Z185 TX14B4T Daewoo CP185
Blank raster - OSG OK
Replace EAROM IC702 & C832; C863 in power supply; kit TZS9EK021(3 pence from SEME!)
14-09-04
Panasonic
Z185 TX14BT
Tuning absent
Replace eeprom 24C16 with new reprogrammed chip
14-09-04
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Last SM download : Weltrend Semiconductor Ltd WT7514L
script execution: 0.13 s