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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: 20
Goodmans
285NS CP775
Blank raster - sound ok
C416 680pF, R409 , R503 & D506 - also check D505 1N4148
14-09-04
Goodmans
285NS CP775
Buzz at low sound levels
Poor earth conns on FOP chip heatsink
14-09-04
Goodmans
285NS CP775
Cabinet vibration at certain freqs
Speaker grilles loose - not obvious - refix
14-09-04
Goodmans
285NS CP775
Col bars on screen - no chroma pll
RC515 100k sm
14-09-04
Goodmans
285NS CP775
Col fault - no B-Y - ok in Txt & mono
CC516 sm to pin 14 IC503 not soldered properly
14-09-04
Goodmans
285NS CP775
Dead - no 20v to line dr tr
C401 10µ 63v
14-09-04
Goodmans
285NS CP775
Dead - STRR5707 reg chip blown
Replace reg chip, F801 4A, R804 0R33 2w, R807 7k5 & R806 100R - caused by C807 1nF 2kv blue cap that had split & leaky - & check print condition
14-09-04
Goodmans
285NS CP775
Dead with mains fuse FS8014A A/S blown
D803/804 & C803
14-09-04
Goodmans
285NS CP775
E/W dist with lack of height
Q403 2SB546K & Q404 C3198Y
14-09-04
Goodmans
285NS CP775
E/W faulty
R406 4R7, D403 BY228 & Q404 KTC3198Y
14-09-04
Goodmans
285NS CP775
Excess width & no E-W
C301 0.022µ s/c
14-09-04
Goodmans
285NS CP775
Field collapse
C305 & C403 470µ & I301 TDA8351
14-09-04
Goodmans
285NS CP775
Field distorted or collapse
TDA8451 & TDA8375
14-09-04
Goodmans
285NS CP775
Insufficient height aft pcb or crt replacement
Scan coil impedance different - change R333 from 3k to 2k & R919 from 3R3 to 0R68
14-09-04
Goodmans
285NS CP775
Int sound & pic - no tuning
Q711 KTC3202Y leaky
14-09-04
Goodmans
285NS CP775
Line foldover with ragged verts
C416 680pF 2Kv o/c
14-09-04
Goodmans
285NS CP775
No sound
Dry joint 15v supply pin on SMPS Tx
14-09-04
Goodmans
285NS CP775
Smearing B, R or G
R910, 911 or 912 100k on crt base
14-09-04
Goodmans
285NS CP775
Txt subtitles/mix darkens pic
Poor set up - select P888 or 120 on ITV & use RGB fastext buttons to select contrast etc. Adj in Txt - does not affect pic
14-09-04
Goodmans
285NS CP775
Vol at max - won't adj value
I702 124LC08B EEPROM
14-09-04
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