Question about MTX TA4501 Thunder 4501 MonoBlock Car Audio Amplifier

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Schematics blows fuses, C141 and D102,as well as 3 lead component without a descriptor beside the D204 are burnt and trace from D102 is burnt open.

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Maybe MTX can provide a schematic.

Posted on Nov 27, 2013


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This is the fuse that is blowing

Don't know what it is? But follow the wire to the component and check that. A power fuse only blows when a component shorts out to ground. That one looks easy. I fix some car computers. Pieces I replace are some times smaller as a pencil lead.

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Park fuse blowing in 04 saturn

Perhaps this can give you some ideas and steer you in the right direction. Do a Google search:
2004 Saturn VUE park light diagram
I came up with schematic diagrams which may help you trace out the circuits. I hope this helps.

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I have a Samsung SMH7177STE/BE I accidently hit the start button in stead of the timer for 30 min. When I went back into the kitchen the microwave was turned off. Thought maybe my outside curcit blew. I...

It may have tripped a high limit switch and less likely but possible it blew the fuse. A fuse blows due to an increase in amperage or a short. There is the possibility it melted components such as the door switches or a wire due to heating the cavity. Door switches pop fuses when shorted or the door doesn't engage them properly.
As most microwaves other than Panasonics contain capacitors you must be very cautious even when unplugged to avoid shock. 2100-4000 volt capacitor on the high side.
So where to begin is unplug the unit. Attach a wire to something grounded to bare metal on the machine. Open it. Look for burnt wires or components without touching anything. Discharge the capacitor using an insulated screw driver or tool (short the leads). Test the fuse using ohms Check the high limits (black disks the size of a penny) by testing across them using ohms. If the fuse is blown check out the door switches, some are closed with the door shut and others are the opposite. So test each switch in both door positions. Test the light wires to ground. Should read open. Test ohms on the whipper motor and fan and to ground as well. Reads measurable over the motor leads and open to ground. Test the capacitor using uF and compare to rating on the capacitor (be sure its discharged). Disconnect the magnetron. Test each lead to ground. It should be open. Its highly unlikely its the transformer or a computer board so i wont go into detail about testing those components.

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2 Answers

Yamaha AX 550 amp blows fuse when power switched on,

Generally speaking, an amp protects itself from heat, shorts and overloads.

Overloads can be from excessive periods of high output 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 hands-on tech.

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1 Answer

Is the fuse in a powerware 9135 user replaceble

There are numerous fuses (rectifier, inverter, charger, battery) on the 9135 that are located internal to the unit and not readily accessible to the user. Generally a blown fuse is accompanied by another component failure which caused the fuse to blow in the first place. As a result, additional troubleshooting and testing is usually required to identify the root cause of the failure. This of course leads to soliciting the services of a technician who has access to the schematics, test equipment, and parts to initiate a repair. Without the schematics, it's like working in the dark. For complete support, please contact Eaton (Eaton bought Powerware so now it's the Eaton 9135):

Toll Free: 1 800 356 5737

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Hi,my xv535 keep blowing the 30amp fuse with the ignition off

You have a massive short. First, start by disconnecting ALL of the components on that circuit. What circiut is that 30 amp fuse on? From there, use a digital multi-meter and check ffrom the connector leads to the chassis ground. You will need a wiring diagram for this, and no, I don't have one for it. Possible to do it without one, but you'll have to trace the circuit by eye or hand. Not too bad on a bike, but in a car, that's a different story. If you have continuity to ground on a circuit that is supposed to be power, you have a wirring short. If you do NOT have a wiring short, you have a component shorted to ground, example, a starter or alternator, etc... the Stick

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Adcom gfa 555 blows the 10 amp fuse and the 6 amp fuse on the far right

Any fuse blowing is caused by a shorted component in either the power supply section or main audio amp part. Follow the fuse circuit and see where it leads you. Look around for burnt of damaged parts. Suspect anything sitting on a heat sink. The most common culprit is the audio amp main transistors, especially if someone shorted the speaker leads together. In the power part it could be the transformer, the large Electrolytic capacitors, rectifier, or voltage regulator. Some amps use an IC for amplification and this can blow the fuse.

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Why is the abs fuse keep blowing in 1999 mercury cougar?

Could be a broken ABS sensor ring at one of the wheels

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Sub is blowing fuses!! :(

The issue is most likely a short in the amp internal circutry where power is essentially flowing without resistance acrosss the short. You may or may not have sound or crackling noise as it depends on where the short is.

If you are electronically inclined, I suggest the folliowing:

- disconnect all power and open the amp up
- look for any burn marks around the circut board and parts.
- first focus in on the area where the power comes in - see if any diodes (black cylinders with stripes on them) are burnt / cracked
- next have a look at all the MOSFETS. These should be 3-legged components and will likely be mounted to the shell or heatsink. Look for any burn marks or cracks on these.
- also look for any wire or component that may be shorting other components. Generally all wires should have shielding and all components should be soldered firmly. Anything crossing other components could be a problem.

If you find any burnt/cracked components, they will need to be replaced.

Here is a sample image showing the MOSFET chips to the top and bottom on the aluminum rail.

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Fuse for instrument & tail lights keep blowing

if its blowing fuses, you have a short(power being touched to ground) Electrical can be hard to trace. Find you a wiring schematic for you vehical and trace each wire, look for loose connections and possible wires melted to each other. Hope this is a help.

Apr 06, 2009 | 2002 Toyota Land Cruiser

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