Question about Fender Passport Deluxe 500watt Sound System with Deluxe Speaker Array

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Fender passport goes in to protect

When i turn it on it goes straight to protect mode. i checked all the out put transistors then i took a look at the power supply and notices a huge clump of solder making multiple points touch if i desolder then will it fix my problem

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  • Fender Master
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I had a problem like this that was caused by a short between the two windings of the toroid in the power supply.

The solder blob is probably supposed to be there as there are numerous common ground points.

This unit is miserable to work on....

Posted on Sep 08, 2009

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If this system is still under warranty get it to a warranty service center. This is an early stage symptom of failure with the Power Amp IC. Fender has a good warranty policy on this stuff - 1 to 3 years

If not under warranty you may want to wait until it the problem is more persistent - easier for a tech to fix - unless it IS every time right now. A good tech can identify the issue quickly once "on the bench". My 'gut' feeling is the Power Amp IC when the system is first energizing to full stable power.

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The "PROTECT" light indicator came on and now the


The protect light generally comes on when the is a short in the speaker cabling. as a test, turn on the mixer without any speakers hooked up. If it still goes into protect mode the problem is in the mixer. Take it to your local music store and have their tech look at it. if it doesn't go into protect, check the speaker cables by plugging them in one at a time. The bad one will send it into protect.

good luck

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You are in danger of popping the amp. The Fender passport 150 would be capable of covering about only a 20 foot by 20 foot area. If your area is bigger than that, you need more power and certainly bigger speakers. I would NOT recommend the larger Passport systems as the speakers are too directive for what sounds like your use... also there are reliability issues.

Aug 05, 2011 | Fender Passport Deluxe 500watt Sound...

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My passport 250 goes into protect mode on occasion. The other night at a gig it would clip into protect as soon as I sent a signal from the mic or guitar. It works fine at home. Is the unit sensitive to...


These seem to be tempermental. I would look for radio frequency interference from nearby transmitter leaking into your guitar cable or mic cable that puts this on the ragged edge of feedback. DO NOT boost highs with the EQ... You can get supersonic feedback that you can't hear, but puts the amp into limiting. Any audio input can start the feedback. These amps are VERY hard to work on due to the packaging. A lot of people have smoked their units and then require repairing.

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We have a Fender P-250 PA system. We get the protect light on when we turn on the system rather than the green power light. We can not get it to operate. Please advise... Gary


Likely there is either a failure in one of the power amps or the power supply. The protect means excess current is being sensed.

You need to take in for repair... these are really hard to work on due to the packaging.

Sep 23, 2010 | Fender Pd250 Passport Deluxe 250watt...

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Amp goes into protect mode as soon as switch is turned on. Pasport 250


There is a problem with the internal amp itself. These are extremely difficult to access. Contact Fender for a local authorized service center.

Dan

Mar 11, 2010 | Fender Passport Deluxe 500watt Sound...

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MY Fender Passport P250 went into protect mode. I changed the FUSE at the power supply with a new fuse. Still it is in Protect mode. How to fix this


This needs to go to the repair shop. The protect mode is turned on when either the power supply has a problem or one or both power amplifiers have a problem. These are often blown components.

These units are HARD to work on. To open you have to first remove then front panel before you can remove the back panel that has the power supply and power amps/heat sinks.

Compare repairs of these units to working under an automobile dashboard!

Hint: On startup, use a series 150 wat lamp to limit current while repairing. SInce these use a switching supply operating off the input line, use an isolation transformer for personal safety.

Oct 04, 2009 | Fender Passport Deluxe 500watt Sound...

1 Answer

My Fender Passport stays in protect mode.


I have one that has done the same. It is the next smaller size. The power supply fried a toroidal inductor in mine. Frankly, these things are a major pain to work on. You have to usually remove the front panel before you can remove the back power supply and power amp section.

If you have warranty coverage USE IT !!!

The protect feature in mine monitors the power supply load and shuts down the supply if it senses overload. They are hard to work on as you have to bypass the protect to troubleshoot and get to the root cause.

Use the old light bulb in series trick to limit the current.

Sep 23, 2009 | Fender Passport Deluxe 500watt Sound...

4 Answers

The 'protect light' comes on Fender PD150 Portable Sound System


The protect circuit is activated by a current sensing transformer in the *input* of the power supply. If any of the subassemblies of the unit (or all of them in combination) draw excess current then the protect light will illuminate and the power supply shut down to prevent any damage to the system.

The circuitry in the power supply is fairly robust as well as fuse protected so it is unlikely that the power supply itself has failed. More than likely one of your output power transistors has been shorted and it is easy to check this yourself if you are interested in doing so.

Furthermore if you follow a few *simple* precautions you can do this safely and confidently.

Post again on this thread if you are interested and I will spew the details.

-BK

Nov 28, 2008 | Fender Passport Deluxe 500watt Sound...

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