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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: 40
B & O
3119
Dead , safety resistor RPl4 open-circuit and the
Replace the line output transformer , the TDA4950 EW correction chip IG01 and coil LG02 .
14-09-04
B & O
MX2000 3119
St/by only (dot in display)
124v HT present no line drive as RP10 1R2 hi res
14-09-04
Blaupunkt
311.02
Storing vol settings
Press the button "N/E" on remote while volume indication is still showing in the picture, and as soon "Memo N/E" is shown, press button "N/E" for a second time.
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 11AK20D2
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 11AK20M-3
Trips at sw on
D604 200v rect s/c - fitted RGP15 in lieu
14-09-04
Bush
1433 11AK20S
LED stays green (pic ok)
Q803 BC547 st/by sw tr leaky
14-09-04
Bush
1433 11AK20S
Poor video HF response
Check R931, R932 & R933 150k on crt base
14-09-04
Bush
1497ITV/3 11AK20S
Height stretched & width in on rh side
HT pot never been soldered
14-09-04
Bush
2031 11AK19-5
Dead with no power led
HT only 60v - dis'd R823 to opto got HT up to 113v but with poor reg - C829 smoothing cap faulty
14-09-04
Bush
3114
Dead HT pulses on & off when mains sw held in
IC401 TA8808N 64pin chip was faulty
14-09-04
Bush
3114A
St/by only
R502 330k o/c
14-09-04
Bush
TV311
Frame - height reduced & foldover.
3VT13 , ( BC287 )
14-09-04
Bush
TV311
No sound or picture.
3R86 ( 150ohm ) O/C.
14-09-04
Bush
WS6673 11AK19P5
Dead - check for dry joints
Also replaced LOPTr which then produced 1" line scan - D622 BY228 leaky & R629 2R7 o/c. There's a mod for psu (11DYC19P) to fit heatsink for diode that burns up
14-09-04
Bush
WS6673 11AK19P5
Dead - D823 blown (not shown on cct)
When replaced still faulty, IC802 MC44604P chopper chip u/s - also check FET chopper Tr
14-09-04
Bush
WS6673 11AK37
Width excessive
C622 12nF 350v s/c
14-09-04
Goodmans
GTV69W3 11AK19
Switching from Nicam to Mono then no sound
VL301 on Nicam PCB
14-09-04
Hitachi
C1414R-311
dead
Q903 ON4584 chopper s/c R951 39k hi res
14-09-04
Hitachi
C2114T-311
No control via front controls/sigs disappear
Fit updated micro kit pt no A523217
14-09-04
Hitachi
C2514Z311
Hotel mode - stuck in
Hold in Vol + & Vol- whilst sw on, when display appears with symbols increase vol to level reqd
14-09-04
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