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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: 3532
Akai
CT-T21N
3
2S
I have an Akai CT-T21N32S which will not fire up, the red LED is illuminated on the front but nothing else happens, I have tested dozens of components but to no avail, the block diagram in the service manual I have is unreadable which is quite upsetting a
cure: replace eeprom IC602 ref
23-06-05
Akai
CT21
3
7
Field scan only I"
No 33v via R442 - 5R16 8k2 o/c
14-09-04
Akai
CT21
3
7UKT
No sound except hiss - ok through scart
when a 6Mhz resonator was fitted in vacant place 30F1 sound ok
14-09-04
Akai
CT21
3
7UKT
Vision buzz
Remove digital transistor 9tr9
14-09-04
Akai
TV20
3
4
St/by only with HT only half normal & LED flashing
Stuck in chjld lock mode - disable using handset
14-09-04
Akai
TV
3
451 Stereo+2
Dead
VO10
14-09-04
Akura
CX2
3
Flyback lines near top
C303 100µ 35v
14-09-04
Akura
CX
3
0
Field collapse
No supply to FOP Trs as R422 10R ?w o/c & D420 BA133 leaky
14-09-04
Akura
CX
3
0
Field collapse
C311 220mfd 35v scan coupling cap o/c
14-09-04
Akura
CX
3
0
Field collapse
C311 220µ 50v o/c
14-09-04
Akura
CX
3
0
No sound/pic - eht present (field coll)
No 12v supply R418 3R3 o/c
14-09-04
Akura
CX
3
3
No start up
R811 560k o/c - beware of charged mains cap!
14-09-04
Akura
CX
3
3
St/by only
D833 s/c in 22v supply
14-09-04
Akura
CX
3
4
Int line tear & switching to standby.
Replace wire links under IC307 bypass holder , IC301 ( VSP2860 )
14-09-04
Akura
CX
3
4
Switching to standby & int line tear.
Replace wire links under IC307 bypass holder , IC301 ( VSP2860 )
14-09-04
Akura
CX
3
5
Dead - Low HT 40 - 60v
R840 47k o/c in psu comparitor cct
14-09-04
Akura
CX
3
5 Nicam
No sound
Replace Eeprom
14-09-04
Alba
CTV
3
359
No pic - sound ok
Loss of line drive - Q601 BD679A reg; print flash over between base Q601 & o/p scan coil skt
14-09-04
Alba
CTV
3
400
Field foldover at top when cold - HT low at 96v (115v)
Q506 o/c
14-09-04
Alba
CTV
3
408
Dead
RP4 o/c in PSU 330K
14-09-04
Alba
CTV
3
409
Dead fuse ok Q801 s/c
Replace Q801 BUZ77, R809 0R47 ?w fusible, R805 330k 1W
14-09-04
Alba
CTV
3
409 11AK20S
LED stays green (pic ok)
Q803 BC547 st/by sw tr leaky
14-09-04
Alba
CTV
3
458
Dead
RP4 330k o/c
14-09-04
Alba
CTV
3
458
Dead - BUZ90 chopper s/c
D5 FR144 in snubber network s/c - also replace R4 & 5 & TDA4605
14-09-04
Alba
CTV
3
458
Dead with mains fuse blown
C8 1nF 1kv leaky
14-09-04
Alba
CTV
3
458
Field collapsed to 1"
R25 12k o/c - feed to 33v supply
14-09-04
Alba
CTV
3
459
Int Field collapse with it turning off
Blanket resolder field stages even if they look ok
14-09-04
Alba
CTV4808 11AK19E
3
No tuning but tuning bar moves
Q501 BF240 - BC548C works in this position
14-09-04
Alba
CTV71
3
Dead
Startup resistor R108 270k
14-09-04
Alba
CTV71
3
Lines at top of pic
C267 4µ7 160v leaky
14-09-04
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