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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: 355
JVC
AV21TS2EK
Green line down rh side of pic
TB1227AN IC101 Jungle chip u/s
14-09-04
JVC
AV21TS2EK
Int flashing across screen
CRT faulty
14-09-04
JVC
AV24WT5EKS JK11
Blank white raster at start up - reverts to st/by aft 5 secs
The +5v supply low - replace 5v reg IC954 BA05T - used L7805CP in lieu
14-09-04
JVC
AV24WTSEKS
Dull pic, poor contrast
Check if "ECO" mode has been set - press the I "Information button and Mute button at the same time to enter the service mode. Choosing 6 (Picture settings) from the VSM menu you can set up the contrast and brilliance settings etc in all the preset modes that this set offers (EI Warm, Cool, Normal etc)
14-09-04
JVC
AV25F1
Field collapse & no sound
Dry joints regs IC521 & 522
14-09-04
JVC
AV25F1
Int dead
Dry joint between lie dr base & video/chroma board
14-09-04
JVC
AV25F1 JX
Dead
Q001 SGSIF444 chopper tr s/c, IC001 TEA2261, CNX82A opto also replaced to prevent repeats
14-09-04
JVC
AV25F1EK
Blank raster aft 45 mins
Field chip TDA3654 - s/castle pulse dist thus blanking pic with full invisible raster
14-09-04
JVC
AV25F1EK
Dead - LED blinks on once at sw on
Loptx faulty
14-09-04
JVC
AV25F1EK
Geometry of pic out
IC561 TDA8145
14-09-04
JVC
AV25F1EK
Int shut down
Opto coupler CNX92A & 2SC1815
14-09-04
JVC
AV25F1EK
Int sigs & other int functs
Dry joints IC522
14-09-04
JVC
AV25F1EK
Lack of width with foldover
Check for dry joints in line stage
14-09-04
JVC
AV25F1EK
No sound
CP591 15cp IC501 TDA3810 s/c On 'ASP' small sub panel LH Side .
14-09-04
JVC
AV25F1EK
No sound or field
FR527 6R8 1w also TDA3654 causing top cramp
14-09-04
JVC
AV25F1EK
No Txt - when selected goes blank & returns to pic
IC004 PCF84C81P/064 on Txt pcb
14-09-04
JVC
AV25F1EK
Text faulty - keeps jumping to random pages
solder bridge across pins 1 & 2 of IC02 SAA5243 Txt proc chip
14-09-04
JVC
AV25F1EK JX Chassis
Dead - LOPTr Q502 BU508AFI s/c
Caused by faulty LOPTx
14-09-04
JVC
AV25F1EK JX
INT. RF , COULD BE MISTAKEN FOR TUNER Clue is No
IC522 DRY JOINTS
14-09-04
JVC
AV25F1EK JX
PSU powers down aft a sec of sw on
HT was excessive - Q031 2SC1815YG o/c
14-09-04
JVC
AV25F1EK JX
STARTS UP THEN SHUTS DOWN
Q031 OC
14-09-04
JVC
AV25F1EKA
Int blows lop trs
Check for dry joints driver IC etc
14-09-04
JVC
AV25FX11
PIC PULSING-HT CONSTANT
DJ - HAIRLINE CRACK ON C011 PSU PANEL
14-09-04
JVC
AV25GS1EK
Dead - no 146v supply
D2031 BY229-600 o/c
14-09-04
JVC
AV25GS1EK
Reverts to st/by aft I sec
removing eeprom type cat35c104hp allows set to run - eeprom faulty
14-09-04
JVC
AV25GS1EK & AV25S1EK etc
Dead - HT starts to rise then decays
D521 BY228 in EW cct
14-09-04
JVC
AV25GS1EK MX
St/by only
Dis pins 5 & 6 of EEPROM to check - if set powers up then EEPROM may be faulty (IC704 pt no CAT35C104HP)
14-09-04
JVC
AV25S1EK
At sw on LED red then green, red then out - dead
C468 (4u7F 50v) blown its top and R526 (39R 0.5w)burnt also D521 (BY228) s/c
14-09-04
JVC
AV25S1EK
Dead or int dead - front LED operates ok & HT/LT readings ok
Check R903 & 904 2k2 & dry joints on st/by trs Q902 & 901 near them
14-09-04
JVC
AV25S1EK
DIM PIC
C1206 LEAKY 3.3mfd
14-09-04
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