if you've got any knowledge of takin these type of things apart then here goes. undo the six fixing screws (if it outs of warrenty that is).
what you'll see is a main board and a little pcb boad attached to the back in which the rca's are connected to. remove the screws that hold this in place and with a set of long nosed plyers gentlely close the plastic lugs so you can remove it ( also remove all wires as to remove it compleatly) if you look on this little board you will see 2 black chips that are next to each other. the 1 that stands out the tallest out of the pair CHECK IT FOR DRY JOINT (solder split ) as that 1 normally becomes loose and can move about (re solder it) and replce back. now on the main heat sink unit you have 2 amp chips. remove the screws and clean all heat sink compound. put new compund on and screw back ( these dont need removel if your gentle. replace the cover and see what it does
best of luckif you've got any knowledge of takin these type of things apart then here goes. undo the six fixing screws (if it outs of warrenty that is). what you'll see is a main board and a little pcb boad attached to the back in which the rca's are connected to. remove the screws that hold this in place and with a set of long nosed plyers gentlely close the plastic lugs so you can remove it ( also remove all wires as to remove it compleatly) if you look on this little board you will see 2 black chips that are next to each other. the 1 that stands out the tallest out of the pair CHECK IT FOR DRY JOINT (solder split ) as that 1 normally becomes loose and can move about (re solder it) and replce back. now on the main heat sink unit you have 2 amp chips. remove the screws and clean all heat sink compound. put new compund on and screw back ( these dont need removel if your gentle. replace the cover and see what it does best of luck
According to Technics reference manual, turn the unit off, unplug for a few, plug in, turn unit on. Consult your "dealer"(authorized repair person, i guess) if light remains on. But doesn't say what f70 means, or associated with. Unplug and open up the unit, and check the internal fuses on the circuit board. Also check for proper speaker wire hook up. Re-seat the connections. Visibly check the speaker wire runs for shorts, cracked casing, cat/dog chewing. etc.
Answers & Comments
Does it cut out on low volume? is it while your tryin to watch a film ?
if you've got any knowledge of takin these type of things apart then here goes. undo the six fixing screws (if it outs of warrenty that is).
what you'll see is a main board and a little pcb boad attached to the back in which the rca's are connected to. remove the screws that hold this in place and with a set of long nosed plyers gentlely close the plastic lugs so you can remove it ( also remove all wires as to remove it compleatly) if you look on this little board you will see 2 black chips that are next to each other. the 1 that stands out the tallest out of the pair CHECK IT FOR DRY JOINT (solder split ) as that 1 normally becomes loose and can move about (re solder it) and replce back. now on the main heat sink unit you have 2 amp chips. remove the screws and clean all heat sink compound. put new compund on and screw back ( these dont need removel if your gentle. replace the cover and see what it does
best of luck
According to Technics reference manual, turn the unit off, unplug for a few, plug in, turn unit on. Consult your "dealer"(authorized repair person, i guess) if light remains on. But doesn't say what f70 means, or associated with.
Unplug and open up the unit, and check the internal fuses on the circuit board. Also check for proper speaker wire hook up. Re-seat the connections. Visibly check the speaker wire runs for shorts, cracked casing, cat/dog chewing. etc.
Hope this helps.