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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: 16
Philips
GR2.2AA 21ST2730/05
No sound/poor sync - improves with time
C2072 a 2.2mfd cap was OC on Nicam IF module
14-09-04
Philips
GR2.2AA 25MN1550
LOPTr destroyed every few days/weeks
Varyation in hor phasing - TDA2579B timebase gen chip
14-09-04
Philips
GR2.2AA 25PT410
Dead - LOPTr s/c
Caused by dry joint line scan coils
14-09-04
Philips
GR2.2AA 25PT532A/05
Tripping - HT only 100v & LT lines about 1/2 normal
6670 Thy TAGEO102AA, will start if gate dis'd or Thy removed
14-09-04
Philips
GR2.2AA 25ST2761
Dead with quiet tripping
C2611 68uF 25v in psu pri hi esr
14-09-04
Philips
GR2.2AA 28ST2781/05B
Trips once per sec with led flashing in sympathy
Doesn't trip with scan coils removed - Check fuse 1534 315mA
14-09-04
Philips
L2.2AA 29PT828C/05
Dead - 5A fuse in plug o/c
Mains rect cap arcing 220µ 385v
14-09-04
Philips
L6.2AA 25PT4103/05
E/W correction
C2913 390nF o.c. also split and bulging
14-09-04
Philips
L6.3AA 25PT4495/05
Int lock up of controls - only cured by sw off & on again
Reg Tr7505 BC337/40
14-09-04
Philips
L6.3AA 25PT4495/05
Tripping - s/c in LOP
C2912 2n2
14-09-04
Philips
MD 2.21 AA 28PT7303
After replacing LOPTx set starts up with brief EHT then reverts to st/by
FET on same heatsink as BU2520 is S/C
14-09-04
Philips
MD1.2E AA 28PW63332/05
Line collapse
Burnt conns on deflection yoke plug/skt
14-09-04
Philips
MD1.2E AA 29PW6332/05
Excess width with poor E/W
Dry joints E/W driver Trfmr 5424
14-09-04
Philips
MD1.2EAA 29PT6773/05
Won't go into st/by
R3588 3R3 ?w o/c in st/by prot cct on large sigs panel - also replace C2561 with 3,300µ 16v
14-09-04
Philips
MG3.1EAA 28PW9525/05
Sound dist/fuzzy
Hi imp center speaker
14-09-04
Philips
SA10EAA 28PW6816/05
Int changes chan on its own inc AV & also int off
Main micro on sub panel with sm comps on it - known as "Painter chip" faulty - costs around 50UKP & needs hot air soldering equip to change - not for the faint hearted!
14-09-04
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