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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: 15
Grundig
CUC
630
0
Audio int comes & goes
Check st/by contacts on mains sw (dis to isolate)
14-09-04
Grundig
CUC
630
0
Reverts to st/by aft 3 secs
Pin 8 IC811 going low (overvolts prot) - caused by crack in print between conn C & C591/2
14-09-04
Grundig
T51-640 CUC
630
0
Lock removal
Vol + Vol - Prog- Prog + then i or pc
14-09-04
Mitsubishi
CT2
630
Startup - no startup from cold.
D501 s/c.
14-09-04
Nokia
6
630
LINE DOWN RH SIDE
CHECK 470 mfd LT LINE
14-09-04
Nokia
6
630
Core 2
Blank raster with fback lines
Pin 2 LOPTx dry joint
14-09-04
Philips
28PW
630
5 A10
No Red
IC7301 U/S TDA88858Q.
14-09-04
Philips
A10 28PW
630
5
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 28PW
630
5
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 28PW
630
5
R/C inop
IR Rx pre-amp 1002 on sub panel front of set- part no. 9322 1275 4667
14-09-04
Philips
A10 32PW
630
5
Vert lines floating behind pic - same on scart
Being generated in TDA9181 comb filter - TDA9181 replaced
14-09-04
Philips
A10 32PW
630
5/05
No sigs but tunes ok - traced to small sigs panel
Check options code against label on crt
14-09-04
Philips
A10E 28PW
630
5
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 28PW
630
5
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
Samsung
CI1
630
won't go to stby
C806 and C808 100uF 25V
14-09-04
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