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Repair tips  

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

MakeModelProblemSolutionDate
Found: 19



Lowe66472Sound - motorboating when sw onC671 1000µ 16v & C675 in 7.5v supply14-09-2004
LoweC8001Dead - LOP stage not workingT534 BD137 s/c b-e; upgraded to a TIP41C as original ran hot14-09-2004
LoweC8001E-W faultyR583 22R & IC1581 TDA495014-09-2004
LoweC9000Deadfusible link R504 o/c & 315mA fuse in LOP o/c - LOPTx14-09-2004
LoweC9000Field - lack of height27v supply low, C656 2200µ35v & T658 BD13914-09-2004
LoweC9003Relay on front PCB energized but volts at PSU main Cap <300V (No start up as there is <7v to TDA 4601Relay on Front panel is defective, it make contact only briefly (you cannot turn the set on by s/c relay contacts )14-09-2004
LoweConcept 55/63/70DeadLine dr tr T525 BD139 leaky & 3R3 resistor in 27v line o/c - also check R666 0R22 safety res14-09-2004
LoweE3000Attempts to start but goes into prot mode (not st/by)Dis HT from LOP stage restores HT - BA157, feeding the 27Volts, from the loptx was shorted, 14-09-2004
LoweM124 C8500Dead with 1.6A fuse blownTDA4601 chopper chip s/c, small blue therm in start up cct, T539 BU508D LOPTr hi res14-09-2004
LoweM124 C8500High HT (should be 142v)C652 47µ 250v ; C653 47µ14-09-2004
LoweM124 C8500Pic jitter & /or hum on pic with chan display flickering, sound goes low & controls not working intCheck for dry joints in psu, front pcb & IR receiver14-09-2004
LoweMS56 C8001Dead - st/by onlyLine dr Tr supply res R534 3R3 o/c also check C534 47µ14-09-2004
LoweMS56 C8001Dead after smelling hotC652 47µ 250v HT cap leaky/ burnt conns14-09-2004
LoweMS56 C8001High HT (should be 142v)C638 1µ14-09-2004
LoweMS56 C8001Venetian blindsP323 1k LZ AMP preset o/c14-09-2004
LoweProfi T28Poor start up from coldC626 100µ in start up cct for TDA460114-09-2004
LoweS124150 Volt too low4 caps in SOPS: ,3 * 100uF + one at 1uF have to be changed14-09-2004
Lowe OptaC8001High ht and LOPTx arcing (142v normal)replace loptx & C624, 626, C641 100µ, C638 1µ, etc etc14-09-2004
Lowe OptaC8001No soundMute line held low - D496-9 diodes 1N4148 replaced14-09-2004
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