Question about Sunfire Cinema Grand 200 Five 5-Channel Amplifier
U have a shorted primary power supply unit on your amp. for linear supply check diodes and capacitors. for smps chek switching transistor or any other switching component. if u have no idea get it repaired by a tech.
Posted on Apr 05, 2010
I have a Sunfire 300 Two, when powered on and connected t the pre amp the output became very low, also the sound is not normal the sound is clipped and towards to high treble. I removed both the RCA cables to the pre amp and slowly touched the RCA pin to induce hum and this hum is high pitched towards high frequency not the normal 50Hz hum, occurs in both channel so I think its some thing to do with the Tracking power supply, removed the cover found no burned parts. any advise
Posted on Mar 21, 2011
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Posted on Jan 02, 2017
Tips for a great answer:
I have the same saw.
Sorry but this question has to be asked, is the AC (Alternating Current) outlet working/ an live outlet? Had to ask.
If outlet is good move on to the next steps.
Take an ohm meter / continuity meter.
With the AC power cord unplugged from the AC wall outlet.
Place the two test leads from the meter onto the plug prongs .
With the switched closed/ON, you should get zero ohms (or very low, close to zero/ continuity).
In your case you probably will not have any continuity because it doesn't turn on.
Now comes the fun part trying to find the problem/ open connection.
Lots of possibilities.
The AC cord could be bad at the plug end.
The AC cord could be bad at the point entering the table saw.
The motor could be bad.
The brushes in the motor could be bad.
The field winding in the motor could be open/bad.
The plan is to ohm/continuity check the path of the power going to the motor, (both sides of wiring).
While meter leads are on the AC plug end, wiggle the strain relief ends. You have an intermittent connection.
TROUBLE: SAW WILL NOT START
PROBLEM 1. Power cord is not plugged in.
2. Fuse or circuit breaker tripped.
3. Cord damaged.
4. Burned out switch.
REMEDY 1. Plug saw in.
2. Replace fuse or reset tripped circuit breaker.
3. Have cord replaced by an Authorized Skil Service Center or Service Station.
4. Have switch replaced by an Authorized Skil Service Center or Service Station.
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