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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: 12
Goodmans
W280NS Fo
rm
enti F19
Service mode access
Sw on TV holding in Vol+. Release vol button & press St/by on r/c within 3 secs. To save settings press yellow "mem" button else press TV/AV to exit without saving changes
14-09-04
Hikona
RM
2002
Crackle on sound unaffected by vol setting
check 47µ tant coupling cap under IF screening can
14-09-04
Hikona
RM
2002
No sound
IC101 TA7680 Audio o/p chip pin 1 (vol cont) should read 5.8v at min vol & 0v at max. Was not varying - Q201 faulty - BC238 does
14-09-04
Hikona
RM
2002
No sound.
Q201 ( BC238 ) but diff legout , TA7680
14-09-04
Hikonda
RM
300
Fault picture/sound OK but gradually after 5 minutes H/V sync started to fail followed by a total video overload and vision buzz on sound.
due to a 0.22Mfd 50V Tantalum capacitor C114 (used a polyester as replacement
14-09-04
Hikonda
RM
300
sync failed aft 5 mins with vid overload & buzz
C114 tant cap 0µ22 50v
14-09-04
Proline
1485R Daewoo Fo
rm
enti
No line drive
I501 micro u/s Part no 1DW3813DE1
14-09-04
Proline
1485R Daewoo Fo
rm
enti
Reverts to st/by aft 65 secs
I501 micro u/s Part no 1DW3813DE1
14-09-04
Proline
28N1 Fo
rm
enti F19
Dead - Chopper FET short. R8 O/C 390k
also replace TR1 P60NB80PF,
14-09-04
Proline
28N1 Fo
rm
enti F19
Vol cont bar will not move above 3 notches (not in hotel mode)
EEPROM corrupt - enter service mode by pressing "vol up" on TV whilst sw set on & within 3 sec's press "standby" on R/C (still holding "vol up"). Service mode options now on screen. Make a note of settings!! Scroll up to "INIT CTVFOR-P V1.3" press "vol up" (toggle) & wait 2 sec's to finish.
14-09-04
Proline
F205T Fo
rm
enti PC230
Dead - mains i/p fuse blown
C415 1nf 1kv (blue pulse type) situated near the SMTX on the primary side. It was split
14-09-04
Sony
RM
No picture after 5 mins.
L810 o/c when warm.
14-09-04
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