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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: 13
B & O
890
2
Faint raster with Snow THe Dim Picture
C22 ( 220uf ) ( 18.5v Rail Reads Low )
14-09-04
B & O
890
2
Sound muted a few mins at sw on
dry joint IC5 pin 5
14-09-04
Bush
2
890
D
Field collapse
R704 100R, C702 100µ 63v & IC701 TDA8351
14-09-04
Bush
2
890
D
Int width & E/W
Dry joint T602 next to LOPTx
14-09-04
Bush
2
890
D
St/by LED flashes green
R879 4k7 hi res
14-09-04
Decca
890
1
Tripping or HT low ( Should be 115v or 109v ) may start up correctly if scan coils unplugged .
C803 220uF 16v ( PSU IC supply ) OC.
14-09-04
Grundig
7
890
Loss of 45v rail
IC430 TDA8350Q
14-09-04
Grundig
CUC7
890
Focus poor
C07 680pF 12kv leaky
14-09-04
Matsui
2
890
Dead - no chan ind
No ac supply to bridge rect as relay wasn't being energised by pin 30 micro IC103; No 5v to micro pin 52. D142 5v6 zener on print side s/c (between pin 52 IC103 & chassis)
14-09-04
Matsui
2
890
Field collapse
R515 3R3 2w in psu & UPC1498H field o/p chip
14-09-04
Matsui
2
890
Field collapse with very bright line
D406 s/c & R440 o/c in video o/p supply
14-09-04
Matsui
2
890
Int goes into st/by or dead with no st/by led
St/by trfrmr T101 o/c winding - pt no 040535009C
14-09-04
Philips
2B 28CT8
890
/79R
White screen with normal sound
C2638 4µ7 350v in RGB o/p supply
14-09-04
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