Question about JBL PB10 Subwoofer

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Fuse blows My fuse blows when I turn the unit on, even without it connected to anything. Took it to a tech and he reckons the transformer is shorted and probably output digital stage stuffed. So i want it fixed but he reckoned to hard and expensive. Anyone know who sells replacement amp modules ?

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Try ebay.

Posted on Jun 25, 2009

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4 Answers

R-9H84B. It just stopped working.Went to use it and nothing , thought it was unplugged. Repair man replaced the 20 amp fuse and it immediately blew. He said it was the transformer.Is it transformer?


It could be the transformer. Is it generating any smoke? They usually burn up because of shorted windings.

If the fuse blew, however, when the door was opened or closed, then you have a bad door switch.

If the unit heats, and the fuse blew after a few minutes, then you could have a weak fuse holder.

Jan 12, 2017 | Microwave Ovens

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I have a blodgett zephaire gl oven. unit kept buring up 24v transformer, was old bad centrifical switch in motor. I replaced motor with brand new one, unit still buring up 24v transformer.....why ?


A short somewhere causing it to overamp. Put a 3amp inline fuse on the secondary side (24v side) on the hot wire. This will save the transformer and blow the fuse not the transformer. The centrifugal switch prolly wasn't bad. So I would trace the wire coming off transformer and look for bare wire or loose wires. Anything that would cause a short

May 04, 2016 | Blodgett Ovens

1 Answer

Control transformer keeps shorting out


One or more of the solenoids operated switches is your most probable cause. If you have a clamp on amp meter, measure the amps pulled by each component with a solenoid. The reversing valve solenoid and the main contactor solenoid. Each one of the these components are typically rated at 6watts. If your control voltage is around 25 volts, your amp draw should be about .24 amps max. If your transformer cannot be reset without blowing, install a 3 amp inline fuse so when the overload occurs the only thing that blow is an inexpensive fuse costing about 25 cents instead of a several dollar transformer. If your fuse/transformer immediately blows, try looking for a direct ground in the control wiring. If problems has persisted for a while, you may even have to look into replacing your thermostat wire. The control wire travels over the thermostat wire throught the thermostat and excess amps through the thermostat wire can break down the insulation jacket and short to the common wire causing the control transformer to blow. Another thing to check is the condition of your thermostat wire to check if the insulation is shredding off. Old thermostat wire, especially thermostat wire exposed to sunlight deteriorates quicker. Hope this helps.

Jan 10, 2014 | Rheem 14AJM49A01-RHSLHM4821 4 Ton 14.50...

1 Answer

When i turn on the ac the transformer fuse will blow


If you are blowing a fuse just when you turn on the ac then the anomaly has to be with a circuit that only operates when AC is turned on. How about the compressor clutch which is electrically operated? If hot wires going to that unit lose insulation and get grounded, then the moment you turn on the Ac you will have a short and the fuse will blow. Or maybe the clutch has developed an internal short.

Nov 24, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

04 nissan titan will not do anything


Something is shorting out, disconnect your battery for 30 min and remove the fuse that keeps blowing, reconnect battery WITHOUT putting the fuse in and see if it will start, if it does then you need to take your radio out and look for wiring faults..

Jun 21, 2013 | Cars & Trucks

1 Answer

Turn on the unit the 120v 6amp fuse blows right away


Hi,
This is an indication that you have a short on 1. Power cord - even low of chances but still to be checked. 2. Rectifier Diode 3. Transformer 4. Voltage regulator IC/transistor 5. Main filter Capacitor.

This is not DIY and can't be fixed without some test instrument so I've advice you to look a technician to isolate the shorted parts.
Hope it may help you.
Thanks for using Fixya. JDVillanueva

Feb 06, 2011 | Sony STR-DG520 Receiver

2 Answers

Fues blown in xpower inverter 1750 plus


These fuse are often intend to protect voltage inversion. (reverse voltage)
So, if the eight fuse are blown, then maybe the voltage red and black wire were not connected to the correct polarity.

then again, even if these fuse are intend to be use as reverse protection, it may occure that transformer short out, transistor short out and many other short circuit inside the inverter as occure.

So replacing all eight fuse might not restore the unit function, they may even blow again.
Also, reversing polarity that cause the fuse to blow might have damage the transistor stage.

I am still, investigating few other problem with those unit.
I don't have all answer yet.

regards,

Hitheck

Dec 21, 2008 | Xantrex Technology Xantrex Xpower 1750...

1 Answer

INFINITY BASSLINK X BLOWS FUSES


What probably happened was both of the final audio output transistors shorted. This caused a higher than normal drain on the switching transistors on the primary side of the torrid power transformer causing one to short and then blowing the fuse. I replaced both switching transistors and ramped up the current to about 5 amps. I could see the power supply was not working but there was still a short. I traced the short to both audio output transistors. Replaced them and unit is like new. After I found a service manual on this item it was a breeze to find the problem.

Sep 19, 2008 | Infinity BASSLINK Car Subwoofer

2 Answers

Dometic air & analog thermostat control kit


Had one doing similar recently, and after a thunder & lightning storm. Nothing worked, but kept blowing 2 amp fuse in thermostat, when anything tried, heat or cool. Pulled plastic control box down from inside upper unit (AC) made sure breaker was off, took of plastic cover and smelled inside, and could smell burnt plastic smell. Replaced, control box, that got fan only working. Tried another thermostat , everything worked as it should. Turns out the lightning, or power surge, or whatever, shorted out the thermostat, and control box at same time.

Aug 03, 2008 | Dometic Rooftop RV Air Conditioner

2 Answers

Goodman Furnace/AC unit not working 3a fuse blows even after replacement. once thermostat is turned on and clicks to start ac unit the fuse blows


3 amp is standard.the fuse is blowing to protect the transformer.It is telling you that there is a short in the low voltage wiring.Goodman also had an issue with the coil shorting on the contactor.To prevent damage.....i'd call a pro.It should be a fairly simple repair.

Jul 03, 2008 | Goodman CLQ36AR49 Air Conditioner

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