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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: 22
Rediffusion
MK3
Dead - blown fuse.
Tripler.
14-09-04
Rediffusion
MK3
Dead.
Drys on mains Tx 6T1 primary winding.
14-09-04
Rediffusion
MK3
Flyback - text lines over top 4" of picture.
8R26 ( 270R ) high.
14-09-04
Rediffusion
Mk3
Int no signals.
Tuner dry joints
14-09-04
Rediffusion
MK3
Raster - weak & over bright.
5R24 ( 220R ) high.
14-09-04
Rediffusion
MK3
Tuning - drift.
Resolder pin 8 of socket 0PLA top of signals panel.
14-09-04
Rediffusion
MK4
Blank raster with flyback lines.
IC SAB3035 ( small PCB LHS of chassis )
14-09-04
Rediffusion
MK4
Colour int.
IC SAA1251 ( remote PCB )
14-09-04
Rediffusion
Mk4
Dead
Dry joint 4C16 3300pf caused failure of following:- 4TR3 BU326A; 4R26 100R; 4D15 BA157; 4R23 5R6; 4TR1 BC182 used in lieu; 4THY1 TIC106D used in lieu; 4D5 12v zener
14-09-04
Rediffusion
MK4
Dead.
4R2 sprung open , line transistor s/c , drys on trans 4T1.
14-09-04
Rediffusion
Mk4
Dist sound with buzz
Adj L9 ic sound coil on IF pcb
14-09-04
Rediffusion
MK4
EW.
3TR4
14-09-04
Rediffusion
Mk4
HIGH FREQUENCY RIPPLES ON PICTURE FROM COLD OK AFT
4C6 1000uF 16v IN POWER SUPPLY
14-09-04
Rediffusion
Mk4
Int field collapse - lifting from bottom
Dry joint PLC plug
14-09-04
Rediffusion
MK4
Int startup - 4R2 overheats.
4R5 ( 68k 1W ) o/c
14-09-04
Rediffusion
MK4
Lack of width.
3C24 ( 3.3nf 1kv )
14-09-04
Rediffusion
MK4
Line off speed - No EHT - R13 overheats.
LOPTX
14-09-04
Rediffusion
Mk4
No sigs - snowy screen only
SL1430 chip on IF pcb
14-09-04
Rediffusion
Mk4
Tubey pic with flyback lines
6R2 1M2 on CRT base o/c - in A1 supply
14-09-04
Rediffusion
Mk4
Width at max or min - no adj
3C24 3300pf dry joints or faulty
14-09-04
Rediffusion
SP2
Line down screen & no colour.
C605 dry jointed.
14-09-04
Rediffusion
SP2
No colour & twitchy line lock at top.
Dry joint on pin 3 of Loptx.
14-09-04
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