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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: 35
Alba
CTV3409
11AK20
S
LED stays green (pic ok)
Q803 BC547 st/by sw tr leaky
14-09-04
Bush
1433
11AK20
Blank screen with 3 lines top lh of screen then shuts down (Anti-theft password set)
Enter correct password!
14-09-04
Bush
1433
11AK20
Bright B pic with FB lines
Q907 BF423 leaky or equiv in other col
14-09-04
Bush
1433
11AK20
Dead
R802 75k 2w o/c or R809 0R47 o/c
14-09-04
Bush
1433
11AK20
Dead - internal fuse intact
power surge blown bridge rects - replace also safety res 2R2 5w
14-09-04
Bush
1433
11AK20
Int dead or reverting to st/by
Dry joints IC802 reg & IC401 jungle chip (under IF shielding plate)
14-09-04
Bush
1433
11AK20
LH side pic purple, RH side green
IC402 STV2180A faulty
14-09-04
Bush
1433
11AK20
No pic - sound ok
Loptx arcing with C615 - LOPTx faulty
14-09-04
Bush
1433
11AK20
No pic/sound - HT ok
D604 BA157 LOPTx sec s/c
14-09-04
Bush
1433
11AK20
St/by only
No clock/data between IC502 EEPROM & Micro replace EEPROM pt no ALBA3621624020
14-09-04
Bush
1433
11AK20
Watery/rolling pic - may be int
C407 47nF 50v vid coupling cap to IC401 pin 13 leaky
14-09-04
Bush
1433
11AK20
D2
Dead
2R2 5w & 0R33 resistors off chopper trfmr blows at sw on - C814 220pF 1kv in psu pri s/c
14-09-04
Bush
1433
11AK20
M-3
Trips at sw on
D604 200v rect s/c - fitted RGP15 in lieu
14-09-04
Bush
1433
11AK20
S
LED stays green (pic ok)
Q803 BC547 st/by sw tr leaky
14-09-04
Bush
1433
11AK20
S
Poor video HF response
Check R931, R932 & R933 150k on crt base
14-09-04
Bush
1434
11AK20
M-3
Int tuning - no sigs
resolder SMD`s around R584 / R521, located on underside of PCB near IC501
14-09-04
Bush
1434
11AK20
M-3
Shuts down with ticking noise
D604 BA157 s/c
14-09-04
Bush
1473T
11AK20
Field collapse
R709 sm 10k adjacent to FOP chip not properly soldered in
14-09-04
Bush
1497ITV/3
11AK20
S
Height stretched & width in on rh side
HT pot never been soldered
14-09-04
Bush
2868NTX
11AK20
Child Lock removal
press P+ and P- on front 5 times
14-09-04
Bush
ITV8401
11AK20
S
St/by only - r/c not operating tv
Initialise remote by pressing arrow L, arrow R & arrow Down as well as "1" at the same time
14-09-04
Metz
11AK20
Chassis
Switches to standby when hot.
Change/replace C601 100nf and C605 3,3uF.
14-09-04
Metz
11AK20
Chassis
Won't search/Search menu is not correct. Displays "enter channel number" although tuner is not synthesised.
Replace microcontroller IC.
14-09-04
Mitsubishi
BDS1451UK
11AK20
-S
St/by only
Replaced IC501 (ST92195B1B1) Micro & check 4Mhx Xtal
14-09-04
Mitsubishi
Black Diamond BDS1451UK
11AK20
-S
St/by only
Check 4Mhz Xtal by micro - may be dry jointed
14-09-04
Protec
3731
11AK20
St/by only aft trying to start
D604 BA157 s/c in 200v supply & LOPTx arcing
14-09-04
Protech
11AK20
D1
Dead - pri HT only
R804 15k 1w, IC801 TDA4505-2 replaced left psu tripping - D809 MR856 s/c - used BYW96E in lieu
14-09-04
Protech
3731T
11AK20
M-3
LOPTx arcing
Use ALB587 from CHS (same as Bush 1433)
14-09-04
Protech
PFA3639/B
11AK20
Dead
D809 sec chopper trfmr s/c - needs r/c to sw on set
14-09-04
Schneider
STV1401
11AK20
D2
Faint tripping noise only
D811 (MR852) the 16volt line rectifier diode was S/C. Fitted a BYT13 (1000v 3amp).
14-09-04
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