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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: 25
JVC
C14E1
Self destructs every few days
C910 0µ1 in chopper sw on pulse shaping
14-09-04
JVC
C14E1EK
Bright pic
ZD301
14-09-04
JVC
C14E1EK
Dead
C907 small disc cap 0µ1? burnt & R901 4R7 5w o/c
14-09-04
JVC
C14E1EK
Dead - st/by only
ZD402 s/c; replace the following:- ZD402, R423, C909, ZD902, C911, ZD901, D408 to prevent HT rising & blowing parts again
14-09-04
JVC
C14E1EK
Dist sound
C143 10µ o/c in dc vol contr feed to pin 14 IC101
14-09-04
JVC
C14E1EK
FAINT HORIZONTAL LINE AT BOTTOM OF SCREEN
REPLACE R434 0.047 OHM
14-09-04
JVC
C14E1EK
Field collapse
25v supply to fop chip LA7830 IC401 missing - R433 0R68 o/c & C424 4n7 500v leaky (measured ok out of cct)
14-09-04
JVC
C14E1EK
field collapse after psu repair
speaker plug connected to service pins by mistake
14-09-04
JVC
C14E1EK
Field o/p chip IC401 LA7830 int destroyed
VR901 2k HT preset int - causing HT to int rise
14-09-04
JVC
C14E1EK
FRAME COLLAPSE
CHECK R335 180K FOR O/C
14-09-04
JVC
C14E1EK
Incorrect AGC
C124
14-09-04
JVC
C14E1EK
Int destruction of fop chip (IC401 LA7830)
Replace VR901 (2K) +B preset.
14-09-04
JVC
C14E1EK
Line Tearing
C632
14-09-04
JVC
C14E1EK
No Txt
SAA5243P/E on Txt pcb faulty
14-09-04
JVC
C14E1EK
St/by only
C406 220µ 25v
14-09-04
JVC
C14E1EK
Stuck in StBy , relay clicks but no go . Or very rarely comes on and then goes to StBy after 3-4 mins .
R323 6K8 5w fusible OC.
14-09-04
JVC
C14E1EK
Tuning drift
C116 sm cap - also check other sm electrolytics whilst tuner out
14-09-04
JVC
C14E1EK (Onwa)
St/by only - can be int
lop stage 12v low at 11.5v - R434 0R68 hi res at 1R2
14-09-04
JVC
C14E1EK Onwa
Dead
After replacement of usual caps the mains smoother C907 4700pF 500v in psu pri was found to be leaky
14-09-04
JVC
C14E1EK Onwa
Dead - HT high
C909/911 47µ cured HT problem but still dead; No supply pin 42 AN5601K dec/tb chip IC301. R323 6k8 5w fusible o/c
14-09-04
JVC
C14E1EK Onwa
Dead - no st/by
Q902 2SB774 base emitter s.c. (used BC558).
14-09-04
JVC
C14E1EK Onwa
Int snowy pic at sw on with no OSD or R/C functs
OK once TMS73C47 micro reset (s/c pin 32 to chassis briefly). Caused by crack in print at front edge of pcb on track to pin 2 micro - hard to see due to covered in black ink
14-09-04
JVC
C14E1EK Onwa
No go
R323 ( 6k8 5watt ) fusible resistor o/c between p42 of IC301 & HT rail.
14-09-04
JVC
C14E1EK Onwa
Set comes on to standby - relay clicks.
R323 ( 6k8 5watt ) fusible resistor o/c ( maybe Int ) between p42 of IC301 & HT rail.
14-09-04
JVC
C14E1K
St/by only - R323 6k8 burnt
AN5601K chip was the cause
14-09-04
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