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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: 192
Aiwa
SE
211K
St/by only
R617 high (replace with 390K 1/4W) - located behind LOPTX.This causes the micro-controller to shut the set down and store this condition in the EEPROM. You can either replace the EEPROM with the correct one from Aiwa (which then requires setting up with a special handset), or use an EEPROM programmer to reset the values. There are two values that require resetting: $0139 should be $00 ($2F when faulty) $013C should be $00 ($33 when faulty)
14-09-04
Aiwa
TV
SE
211
No vid/raster with sound - no/poor OSD
IC303 (OSD Sw) pt no Aiwa87A21167010
14-09-04
Bush
WST Professional 4400
se
ries
Service Mode access
hold menu button while turning CTV on until the red LED lights up. Release the menu button and press standby.
14-09-04
Decca
C
Se
ries
Volume won't Adj over full range or no front Panel Op.
For volume - press --/- on remote , Vol + on set , --/- on remote for no front panel , Switch set off , Press & hold P+ on S
14-09-04
Decca
A
Se
ries
Dead
R802 R803 ( 15K )
14-09-04
Decca
A
Se
ries
Dead with squeal
Dry joints R808 ww resistor
14-09-04
Decca
A
Se
ries
No remote operation
IR Rx faulty
14-09-04
Decca
A
Se
ries
Varying HT
Dry joints R808 ww resistor
14-09-04
Decca
B
Se
ries
Line whistle - mod reqd
Add 220pf cap to pin 5 & pin 6 of opto IC802 in psu
14-09-04
Decca
B
Se
ries
Loses register 7 (line osc free run)
Dry joints 27Mhz Xtal on Txt pcb
14-09-04
Decca
B
Se
ries
To enter electronic screwdriver settings
Move jumper link by proc to other posn. No. in lh of screen is parameter & can be stepped thro' in Hex from 00 to 12 using "3" button (up) & "2" button (down). Parameters changed by using "Balance left & right"
14-09-04
Decca
C
Se
ries
childlock on
sw on tv whilst holding in 'P+' button on front
14-09-04
Decca
C
Se
ries
Cuts out on high brightness scenes
HT volts drops in sympathy - CE803 220µ 16v ( supply to TDA4605)
14-09-04
Decca
C
Se
ries
Field collapse
dry joint I402
14-09-04
Decca
C
Se
ries
int trip - once or twice a day
worse when heated - - TDA4605 heat sensitive - u/s
14-09-04
Decca
C
Se
ries
Line down pic when cold (folded scan)
R413 18R ?w hi res - check HT correct -115v 14/20"; 109.5v 15/21"
14-09-04
Decca
C
Se
ries
No R/C operation
No o/p from r/c chip IC750 Replace TFMS4360N with TFMS5360
14-09-04
Decca
C
Se
ries
St/by LED on - otherwise dead
Dry joint on end pin SCART skt depriving line feed to dr tfmr
14-09-04
Decca
C
Se
ries
st/by only
HT (B+) present - on/off sw perm made - was faulty
14-09-04
Decca
C
Se
ries
Stuck on Chan 1 & no analogue control (Child Lock)
Hold "Prog +" whilst switching on
14-09-04
Decca
D
Se
ries
All red.
R012 100k on CRT base.
14-09-04
Decca
D
Se
ries
Bright Green Raster
Green cathode volts low - Tr931 BC547 o/c & R932 100k hi res
14-09-04
Decca
D
Se
ries
field collapse
R504 3M3 faulty - feeds ramp to pin 42 IC503 TDA8362
14-09-04
Decca
D
Se
ries
Lack of height
Check 33v supply IC001 TAA550 & feed res R015/6 6k8 & R504 3M3
14-09-04
Decca
D
Se
ries
Line foldover with crt heaters dimming
R427 line feed res high res
14-09-04
Decca
D
Se
ries
No Field Scan
If IC401 & R414 are OK check R504 3M3 ohm
14-09-04
Decca
D
Se
ries
Noisy Power Supply in Stand By
Change C806 to 2.2uF 50V
14-09-04
Decca
D
Se
ries
Tuning proc
press 'filled square' button, press '4', search up with '4', down with '4&3'. Press '5' to store chan, press'6' to exit set up
14-09-04
Decca
D
Se
ries
Improvement of AFC Pull in time and Inter-channel Mute
Change R001 to 18K & R003 to 27K
14-09-04
Decca
DBN9B52P B
Se
ries
Ballooning pic
Dry joints line scan coill plug on main pcb
14-09-04
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