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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: 10
Grundig
CUC5
305
No i/p via scart
IC2350 TDA5931-5 on IF pcb
14-09-04
Grundig
CUC7
305
no vid or sound
sm tr CT840 BC848B vid sw tr faulty
14-09-04
Philips
28PW6
305
A10
No Red
IC7301 U/S TDA88858Q.
14-09-04
Philips
A10 28PW6
305
Child lock removal
press menu / features / child lock & turn off. If parental control has been activated (locking out certain chans or locking the set) then enter a pin. If not known then enter 0711 TWICE to gain access. You can then change no.or turn funct off.
14-09-04
Philips
A10 28PW6
305
No R/C - front controls ok
IR preamp rec, cct ref no.1002 on small sub panel at front of set. SEME part no. 9322 1275 4667 only 750mV P.P. at pin 3 of the panel with painter I.C. on, should have been 3.3V P.P
14-09-04
Philips
A10 28PW6
305
R/C inop
IR Rx pre-amp 1002 on sub panel front of set- part no. 9322 1275 4667
14-09-04
Philips
A10 32PW6
305
Vert lines floating behind pic - same on scart
Being generated in TDA9181 comb filter - TDA9181 replaced
14-09-04
Philips
A10 32PW6
305
/05
No sigs but tunes ok - traced to small sigs panel
Check options code against label on crt
14-09-04
Philips
A10E 28PW6
305
Int sound due to muting pin 8 of aud o/p chip IC7702 AN5277 int going low
Traced back to IC7064 sm pin 98 on control board leaky to earth when faulty. To avoid replacing this 100 pin sm chip, s/c e-c of Tr 7701 sm BC847B (under main pcb near AN5277 o/p chip)
14-09-04
Philips
A10E 28PW6
305
No pic - poor pic lacking contrast when A1 advanced
No volts pin 10 LOPTx (beam lim) - Tr7408 BF423 on main pcb leaky
14-09-04
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