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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: 14
Bush
28ZKF Orion
4400
Dead with faulty on/off sw
Dry joints also LOPTr S2000AF s/c & LOPTx from SEME LOPTX1277 at ?18.95 Part S065621409
14-09-04
Bush
3463NTX
4400
No sound/pic - no 5v
TP6 BD441
14-09-04
Bush
3472NTX
4400
No pic - blank raster
TP6 BD441 in +5v supply
14-09-04
Bush
3472NTX Pro
4400
No pic or OSD - only blank raster
Check TP6 BD441 in 5v supply & DC4 1N4148 in BCL cct leaky between LOPTx & Scart. Check volts pin 22 TDA8843, (no higher than +3V) - > +3.6V then IC would disable RGB o/p to prevent crt burn.
14-09-04
Bush
WST Professional
4400
series
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
Bush
WST66
4400
Dead - LEDs ok & EHT rustle
No 5v supply pin 39 & 44 of ICR1 & TP6 - BD441 faulty
14-09-04
Grundig
CUC
4400
Chan changes & vol varies int
IR detector TFMS3300
14-09-04
Grundig
CUC
4400
ERATIC LINE SYNC
C2257 100nF 63v
14-09-04
Grundig
CUC
4400
Flickering/lines with pic breakup
C2257 100n 63v in line osc
14-09-04
Grundig
CUC
4400
Int refuses to go to st/by
Check mains sw wiper contacts
14-09-04
Grundig
CUC
4400
No sound or Picture, EHT normal, screen is black.
Change T2213 and T2221 on IF board. No leaks or any other defects were detected.
14-09-04
Grundig
CUC
4400
No sound or Picture, EHT normal, screen is black.
Change T2213 and T2221 on IF board. No leaks or any other defects were detected.
14-09-04
Grundig
CUC
4400
Poor pic with ringing
TDA5931 IC2210 on if panel
14-09-04
Grundig
CUC
4400
SEVERE PICTURE DISTORTION IN IF STAGE
TDA5931 US
14-09-04
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