Panasonic SA-HE200 Receiver - Answered Questions & Fixed issues

that means you are trying to pull way to much power from the receiver and it can not supply the power needed

HelloIt preamplifier section has the trouble. If you want to do it by yourself at home, you must have through knoledge in electronics, as this section inside is a very coplicated one, even a well experienced technican too, take a long time to troubleshoot, and locate the faulty component or components. OK.

replace resistor 1702 4.7Ohm

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a possible root cause for intermittent shutdown.

Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Service Manual download Here directly from Panasonic's Site.


Hope this helps
Positive Feedback ALWAYS Appreciated :)

HI:
Usually receivers go into overload due to a bad speaker make sure you disconnect the speakers also to make sure its overloading from a bad speaker. If the unit still shows overload even with all speakers disconnected, then your main amplifier output has a short usually a shorted output transistor is the cause. Unplug the speakers one at a time to and turn the unit on after disconnecting one of the speakers , to determine which speaker is at fault.

All speaker levels are set relative to the front, so they are not adjustable by themselves other than the overall volume control. Page 12 of the manual.

hi there i have had this problem with technics amplifiers generally with them it was negative and positive mix up between input terminals for the speakers or in other case's running the amp with 2 many speakers.
eg. having 2 speakers Bi wired into 1 input making a 6.1 receiver into a 12.1 which makes the amp struggle causing overload or the worst case is a power unit problem.

It could also be overheating... when it overloads does it feel excessively hot? Seek the reason - restricted ventilation, clogged vent holes, for example.

If it's NOT hot, carefully disconnect the speakers at the receiver end one at a time to see if the overload goes away.

hello,
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This is the same as protect mode and means that a problem has been detected in the final output stage of the amplifier. This typically means that either the speaker wires are crossed or (more likely) the actual amp section has a problem. This unit has at least one "amp-pac" or IC that is the output amplifier section. This part may need to be replaced. If so, the part alone will run about $90. A local service tech should be able to determine whether or not the amp-pac is the problem by takeing a few measurements.

Hope this helps,
Dan

Receiver is designed for 8ohm speakers. you can't use car audio speakers. they are 4ohm. Most receivers will tolerate 6ohms but not 4. This will short the mains and destroy your power amp!

if unit in warranty send to service

http://www.pstc.panasonic.com/WhereTo/FindServicer.asp?ValidJS=1&Pass=1

I had the same problem and all I did was take the built in fan off and the plug it into an extra adapter and the plugged the adapter in the back of the amp so that the fan would come on as soon as you turned the amp on not when the amp got hot. I have had it like that now for about 4 years and the only time that it overloads is when I have music just cranked or there is alot of bass coming out. So try that and see what you get.

Most humming in North America is either 60Hz or a harmonic of 60Hz. The number one cause of humming is a poor common. On co-axial cables this is the outside connection where as the signal is the male post in the centre. Corrosion, oxidation, poor contact are all possible things to check.

This is a variant of the "protect" mode for receivers. This indicates that a problem was detected in the final stage of the output amplifier and the unit has shutdown to prevent further damage. The "fix" for this is to replace either the output transistors or the amp-pac. I don't know which variant is used in your specific model. If it is the output transistors, expect a parts cost in the $15-$30 range. If an amp-pac, the parts will run in the $75-$100 range. Dan

i cannot get sound as my ac receiver says overload what can i do

First of, be sure volume is turned all the way down before or as you are powering it it.
Second if that does not work disconnect all speaker, and input/outputs.  Power the device on and see if it says overload.
If it does skip the rest of these steps, your capacitors are bad or the power supply is no longer functioning correctly.
If it doesnt, start with testing each speaker at power up.  Match the speaker to the output it goes on, power the device see if it says it. 
If it does on any speaker test it is a speaker issue or a terminal issue.  To test for terminal or speaker issue plug a different/ known to work speaker in that same terminal, if it doesnt say overload it is a speaker issue, if it does say overload it is a terminal issue.
Once you have made sure all speakers and terminals work correctly start plugging input and outputs in and test individually.

Blow all the dust out of the unit with compressed air to prevent over heating (overload)