Repair Tips

Search:

Results 37055

Make	Model Ch.	Symptom	Problem Solution
Samsung	TXG2547 K51A	No power, Voltage not changing on pin 18 IC901 SZM-368ET2	Check dz906 short, key-in 1 pin 9 of ic901
Grundig	M70-495 CUC-3800	Dead set	I replaced the BU546 transistor in the power supply and resoldered some paths on the PCB. An intermittent soldering path to the collector of the transistor was the reason for the destroyed BU546
Philips	28PT4521/16 MD1.1E	Fails to stop at station when tuning	R3568 100Kohmat side of L10 connector
Sanyo	C25EG95B EC3-A25	Dead set no start up	Replace R321 120K
Sanyo	CE32WP2 WB2-A32	Dead set, standby L.E.D lit	Check capacitor C634 2n2, 2KV in power supply for o/c or s/c
Sony	FE-1	No teltext just P100	This problem was caused by Q405 2SC2412K being s/c
Sony	FE-1	No power although relay operates main p.s.u inoperative	Check IC606 STRF6654 for failure, also check resistors R659 0.33ohms,3w, R660 0.39ohms,3w, fusible resistor R603 0.1ohms,0.5w and capacitor C625 100uF,25v
Thomson	ICC17	Standby led fault codes and meanings list / standby led flashes then pauses	Code meanings are as follows: 10 = child lock mode, 11 = timer mode, 14 = there is no response from Iv01, 15 = there is no response from IS40, 20 = bus access prohibited by software, 21 = bus data line held low, 23 = bus clock line held low, 25 = switched 5v supply missing, 26 = crt is not warming in the allotted time, 27 = deflection failure more than three times, 28 = IF01 guard voltage pin 8 exceeded, 34 = no response from the nvm chip IR03, 36 = incorrect address passed to bus handler, 37 = unexpected level on NMI line power fail, 41 = bus data line not recoverable
Grundig	ST82-774 TOP/EURO	Not starting, power supply working perfectly display present	Replaced the horizontal deflection power driver ic TDA8140
Grundig	CUC6310	No east-west	Check R569, TDA8145, D566
Panasonic	TX-14B4T Z185	This set had a bright picture, no off air video and no video via scart	The cure, thanks to Panasonic technical was to replace the memory chip I702 X24C
Vestel	11AK19	At switch on front l.e.d turns green, blinks 3 times then set returns to standby. All h.t voltages rise, then fall away as set goes into standby	Dry joints IC807
Sony	KX27PSI	Almost totally dead. No video or audio whatsoever. Only the clicking sound of two power relays when the set is turned on, and conversely at power down. The green/red lights on the front panel do appear. Repeated failure every 2-3 years. Why ?	An insight into what TV engineers did, after speaking to Sony UK: a 0.47K resistor replaces L656 in line to Q651 B. b 0.33 ohm resistor added between L650 and Q651 E. A resistor also replaces L657. Still lasted only 2 years. Any better ideas ?
Sharp	66FW53H FW	Dead only neon lit	Check D735 across 150v rail, if s/c you will need to replace the opto and the D735. Check Q601 line o/p transistor as this may also be leaky
Sharp	DV5131H S3B	Intermittent failure of Q603	Replace C601 low in value
Sharp	Unknown	Fault like soft crt	I had 3 of these sets which all looked like soft crt, i changed the crt base from a known good set and all was ok i do not know the fault on the crt base yet but it was as good as new
Ferguson	ICC8	Line transistor TL19 was short circuit. After replacement the transistor shorts again	Change capacitor CL21
Grundig	T55-731 CUC7303 / FET TYPE	Dead bridge and chopper transistor s/c	If no D663 fitted this is version 2 has fet and UC3843. Failure of p.s components caused by C669 dry jointed. Check/change FET BUZ90, D667 BA157, R661 4.7k not 220r version 1, R666 and R667 56r 1w, R663 10r and the UC3843. All values for 20"
Mitsubishi	BD28WS 11AK19	At switch on front l.e.d turns green, blinks 3 times then set returns to standby. All h.t voltages rise, then fall away as set goes into standby	Dry joints IC807
Philips	28PW6322-05 MD1.2E AA	No picture and no sound and when switching on, the high voltage transformer makes a sound	The capacitor in pos. 2420 was bad it produced smoke after some time