Question about JBL GTO 301.1 Car Audio Amplifier

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Blown capacitors Amplifire was working , my RCA cables got pinched bad and blew 2 capacitors by the RCA inputs , i need help on what type of capacitors were ther tanks

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There's hundreds of capacitors in an amp... The value should be printed right on them. It will have a Farad rating (F) or usually MICRO farad (uF) and a voltage rating (V). Looks like "16V 47uF"... Be aware that there's likely to be more problems than just the caps...

Posted on Sep 20, 2007

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Panasonic sbwa350


The subwoofer for that system also powers the rest of the speakers as well as the
subwoofer as you probably know. Is there any power light coming on? Like on the subwoofer itself where ever the power light is. If not check for a fuse. If no fuse is visable you'll have to take the subwoofer apart, the plate amplifire. There will be screws all around the metal part on the back, you must remove all the screws holding it together. Most of these types of systems have the fuse inside on the board. Also sometimes the fuse does'nt look like a fuse, it could look like a resistor or a ceramic style disk capacitor. Yours will probably have a glass type fuse. If you don't see one look on the board next to the components on the power supply board or if all together look near the transformer area for a F meaning a fuse. /there will be letters and numbers next to each component eg., resistor, capacitor, diode, etc. If you find a glass type fuse replace it with the exact same rating which will be on the end of the fuse on the silver ends of the fuse. If it's not blown you'll need to test to see if your getting voltge out of the transformer. You'll have to have the DVD unit hooked up to it, you don't have to have any speakers connected. The cable from the DVD unit to the subwoofer is what tells the amplifire on the subwoofer to turn on. You could have a blown amplifire IC. I don't know what type of ouput amplifires this uses but I'm thinking IC and not seperate transistors for the output amplifires. You might have one of those blown and if you do then the whole system wont work. Hopefully if that is the problem you'll see a burnt mark on the IIC itsel or some type of burnt spot on the board somewhere to lead you in the right direction to the problem. It could be as simple as a power supply capacitor, who knows til you get into it and start looking around and testing some things. If you don't have the knowledge to do this I am the cheapest electronics business in the USA. It's not a bad system, CrutchField sales it. Also I can waalk you through the steps to narrow the problem down. I help people everyday. You can contact me at ampman37@gmail.com. I can then give you some more info and my business phone number if you feel up to doing this. It's really no big deal and I find that most of my customers who have never done something like this love and learn some electronics and now fix some other stuff they had laying around. I'm here to help. Thank you for contacting me, have a good day.

Jan 06, 2012 | Panasonic SB-WA100 Subwoofer

1 Answer

I have a customer on the phone who has a olevia flat screen and can not locate an input for his cable wire. where are they located?


here are the only signal inputs located at the back of the tv.
1 x HDMI input ( 19 pin HDMI Type A )
2 x component video input ( RCA phono x 3 )
1 x VGA input ( 15 pin HD D-Sub (HD-15) )
Audio line-in ( RCA phono x 2 )
2 x S-Video input ( 4 pin mini-DIN )
2 x composite video/audio input ( RCA phono x 3 )
1 x headphones ( mini-phone stereo 3.5 mm )
1 x SPDIF output ( TOS Link )
1 x audio line-out ( RCA phono x 2 )
1 x subwoofer output ( RCA phono )
1 x serial

If you are looking for a coaxial cable input.. it is actually not available so you have to connect a converter from coax cable to RCA cable for you to connect it on your tv.

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1 Answer

My fuse blew out on my Pioneer amp


Could have been caused by a few things.

1) Low voltage. Most car charging systems aren't equipped to handle the extra strain of amplifiers without some sort of help, if this is the case you may need to add, a capacitor or battery.

2) Blown sub. Sometimes when you blow a subwoofer, it can take your amp down with it, most amp's will go in to protect before this happens, but not always.

3) Over driving the amp. If you max the gain, and bass boost on your amplifier, you can cause all sorts of problems, including blown fuses.

4) Loose or bad connections. Check your connections to the battery, and ground, sometimes a loose connection will play, but cause your amp to over heat by working to hard to produce it's power.

5) Bad amp. Could be a factory defect, like a poor soldier joint, or bad component.

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2 Answers

No signal display on rca 42" lcd


If you have tried other input jacks and cables with the same result, then yes, the input/output board is defective or buggy.  Sometimes a power drain can clear this up as well so it's worth a try:
1. Unplug the product's power cable so the device is not grounded to the house. 2. Press and HOLD the product's own power button for 1 minute to drain the capacitors. 3. Plug the product back into a wall outlet and try to turn it on.
Note: This procedure works with battery operated devices as well so remove the batteries and hold down it's power button.  Electricity can remain in capacitors and on circuit boards enough to prevent normal functionality. By clearing the residue electricity, your product will have a fresh start and many times this will resolve a buggy or non-responsive device that appears to be dead.
If this doesn't resolve it, service would be necessary.

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1 Answer

Toshiba 50h12-reception problem with ant 1 & 2


the tv has a built in decoder. if its scrambled it may be on the wrong setting. try resetting tv to factory settings and see if it sorts its self out. if not it may need the av board changing as it has a fault with the decoder chip.

May 23, 2017 | Toshiba 50H81 50" Rear Projection...

1 Answer

How connect amplifire ??


You hook the amp up to the deck with rca cables red and white. you have output rca on the back of the deck also the blue wire labled remote also goes to the amp to turn it on and off.

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3 Answers

Kicker 750.1 Amp wont play music


it is probably the rca inputs on the amp may have fried. was your cd decked turned up loudly before the power went out? did any wires accidently touch each other? If had worked fine and then suddenly stopped, than either a wire came loose or the inputs fried. try using different cables and I also suggest disconnecting power for 24 hours and then reconnect. If the green light is on then it is getting power and the problem is in the rca cables or the inputs

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2 Answers

RCA RS2656 Shelf System


Had a problem with a customer's stereo system, i replaced the transformer and put in two new fuses and all worked good again. Another time it was a damaged capacitor allowing full charge to go through causing the fuse to blow immediately so i just replaced the capacitor and the fuse and all was good.

Dec 31, 2007 | RCA RS2656 Shelf System

1 Answer

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yea i got my similar tv for 75 bucks blown hv splitter replace with bad resistor blew again 1 day later. i just replaced it tonight along with the flyback hopefully it works

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