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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: 396
Akura
C
X2
3
Flyback lines near top
C303 100µ 35v
14-09-04
Akura
C
X2
4
Dead - hesitant to come on originally
R811 560k in psu pri hi res
14-09-04
Akura
C
X2
4
No sigs
tuning volts fixed at 31v - R023 47k o/c
14-09-04
Akura
C
X2
4
Sound low
Check for dry joints C622 1mfd bi-polar cap behind audio IC
14-09-04
Akura
C
X2
4
Txt lines across screen
C310 4µ7 250v in fop stage
14-09-04
Akura
C
X2
40
Snowy pic with 2" of field scan
R842 39k 1w in LOP stage
14-09-04
Akura
C
X2
5
Dead
Start up res R804/805 15k (or 18k) 2w
14-09-04
Akura
C
X2
5
Dead with low ticking noise.
Q401 ( 2SD1555 ) check for drys on R403 , R407 , R804 & R805.
14-09-04
Akura
C
X2
5
Int blank white raster except for 4 bars on RHS.
Resolder IC705 on print side of upright PCB.
14-09-04
Akura
C
X2
5
No col
changing the data at addresses 1A and 1B: 1A FF ; 1B 3F cured
14-09-04
Akura
C
X2
5
No line drive - standby only.
Q402 ( line drive ) s/c ( c-e )
14-09-04
Akura
C
X2
5
OSD has "purity error" effect
cured by resoldering digital video sub board
14-09-04
Akura
C
X2
5
Purity error type fault, mono ok
VCO locked to wrong freq setting =249(done via service mode)
14-09-04
Akura
C
X2
5
Set trips off when warm.
2x15k start up resisters low in value 1w non-flammable type.
14-09-04
Akura
C
X2
5
To enter service mode
Press S901 at front of pcb and 'display' on hset together. Use 8 & 9 on hset to cycle thro adjusts. Vol+/- to set each one Store each setting with 'P' b4 moving to next
14-09-04
Akura
C
X2
5 etc
Int no pic, one col etc
Dry joints on earth links on component side of pcb - remove ics to repair
14-09-04
Akura
C
X2
5/26
Int field coll
dry joints fop chip & hi watt standoff res near scan coil plug
14-09-04
Akura
C
X2
5/26
Various inc field, brightness, sound & int dead also rf patt
eeprom chip (can be reprog - need serv man & r/c) - note orig settings b4 adj (see TV mag)
14-09-04
Akura
C
X2
6
Dead no sec volts from PSU
C812 1µ 50v, C815 220µ 35v, C821 22µ 63v
14-09-04
Akura
C
X2
6
Field foldover at top
C303 100pF
14-09-04
Akura
C
X2
6
Int dead/blank raster/txt etc
dry joints on dig sigs pcb links esp link J746 under IC703
14-09-04
Akura
C
X2
6
INT FAULTS VARIOUS !!
DRYS ON DIGITAL PCB J746 LINK UNDER IC703 REMOVES LINE DRIVE
14-09-04
Akura
C
X2
6
Int sw off with line foldover as it goes off
Dry joints line scan coil plug
14-09-04
Akura
C
X2
6
NICAM OK FM US
IC002 EEPROM US ( SET WILL NEED REPROGRAMMING WITH DEFAULT SETTINGS )
14-09-04
Akura
C
X2
6
No fm sound with video pback
fm sound ok at IC101 pin 5 if chip - enters nicam pcb but does not reappear, IC002 eeprom chip faulty
14-09-04
Akura
C
X2
6
Sound absent
EEPROM
14-09-04
Akura
C
X2
6
St/by only
HT correct (116v) 5v supply low at 1.4v. C841 470µ 16v
14-09-04
Akura
C
X2
6
Wont go into st/by
R804/805 15k go low res
14-09-04
B & O
2500 L
X2
802
Int reverts to st/by briefly with blank raster on return
Tr6 - use BC338-40 as replacement - checks ok out of cct
14-09-04
B & O
L
X2
500 37XX
NO STBY LED SET STUCK IN STBY
C14 470uF 16v OC
14-09-04
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