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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: 2578
Akai
28
7
0
TEXT ODDITY
REPROGRAM MICRO.PRESS TEXT ON REM , S ON TV , THEN TEXT AGAIN
14-09-04
Akai
CT141
7
D
St/by only
C406
14-09-04
Akai
CT141
7
UK
Field collapse
C411 leaky
14-09-04
Akai
CT141
7
UK
FRAME COLLAPSE
C411 LEAKY
14-09-04
Akai
CT210
7
MS (Onwa)
Int off with blob in centre of screen
Check for hairline cracks around chopper tfmr pins
14-09-04
Akai
CT213
7
Field scan only I"
No 33v via R442 - 5R16 8k2 o/c
14-09-04
Akai
CT213
7
UKT
No sound except hiss - ok through scart
when a 6Mhz resonator was fitted in vacant place 30F1 sound ok
14-09-04
Akai
CT213
7
UKT
Vision buzz
Remove digital transistor 9tr9
14-09-04
Akai
CT21
7
9N-UK
Line osc too fast
C416 220pf 1kv dry joint, R412 10k ?w o/c
14-09-04
Akai
CT21
7
9NUK
Whistles for 1sec then dead
C807 47uF 25v
14-09-04
Akai
CT21
7
9UK
Int blanking pic
RIC01 SPH113 chip faulty (blanking sig o/p at pin 25)
14-09-04
Akai
CT256
7
St/by only
timing constant capacitor for the standby IC is leaky. The IC is mounted on a heatsink in the middle of the board. C093 is a pair of surface mount capacitors [in parallel] connected between pins 2 and 4 of the IC. Remove these capacitors and replace them with a 220nf.
14-09-04
Akai
CT25
7
9
2 inch gap at rh side
C516 470pf 1.6kv next to lop tx
14-09-04
Akai
CT25
7
9N
Steady, Oversized pic
C513 scan corr cap dry joint
14-09-04
Akai
CT286
7
Black vert line down rh side of pic
CK53 120nf in blanking cct
14-09-04
Akai
CT286
7
Thick lines across entire screen
RS11 in vert scan 0µ47 tant
14-09-04
AKAI
CT286
7
THICK LINES ACROSS SCREEN
REPLACE RS11 IN FRAME STAGE 220R
14-09-04
Akai
CT286
7
SP71L
St/by only
C093 or another cap in parallelmarked R093 removing these 2 surface mounted capacitors and cleaning the glue under that had fixed them to the pcb cured the problem
14-09-04
Akai
CT286
7
UNT
Dead with chopper V025 & LOPTr VK50 s/c
check C025/026/027/028 in the psu primary, CK57 and RK56 & CK51 - VO25 (S2000N) and VK50 (BUF450) replaced - no other fault found!
14-09-04
Akai
CT28
7
0
Dead
D/J on on off switch or On off switch burnt
14-09-04
Akai
CT28
7
0
Dist sound
47µ cap next to sound IF chip in HF block
14-09-04
Akai
CT28
7
0
Int crackling on sound
IC3201 APU2470T faulty
14-09-04
Akai
CT28
7
0
Sound noisy & poor when first sw on
Replaced elects in tuner can
14-09-04
Akai
CT28
7
0N
Dead tripping
LOPT
14-09-04
Akai
CT28
7
0N
Low buzzing noisy sound
C242 0.47µ 63v
14-09-04
Akai
CT28
7
0UK
Wont tune to chans above 30
D901 33v zener on aud o/p pcb
14-09-04
Akai
SN
7
1B6
Blank raster at sw on sound ok - pic slowly comes
CRT low emission - reactivated
14-09-04
Akai
SN
7
1B6
No raster, sound ok - if A1 advanced strange rainbow effect
Replace TDA8172 IC NS10 low volts pin 2 & RK53 3R3
14-09-04
Akai
SN
7
1B6 TV2851
No pic - sound/EHT present - Field blanked
RK53 3R fusible pin 3 LOPTx
14-09-04
Akai
SP
7
101
St/by only
Replace C093 sm (on print side)
14-09-04
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Last SM download : DENON PMA 725 ; 925
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