Question about Gemini Sound Products P07 2-Channel Amplifier

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Gemini p-07 amp board fault

Ihave a gemini p-07 amp which has blown a cap on the board id no c17 as it has destroyed its self i was wondering if you would know what its value is in pf and its purpose and if pos the reason for its failing

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Re: gemini p-07 amp board fault

Its better to get the schematic diagram or a similar one to be sure, but the reason for a blow up may have to do with a s/c along the line.

Posted on Jun 01, 2007

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2 Answers

Whats the problem of my onkyo m-501 it has no power

unplugged with nO power cord connected,,after checking for any internal blown fuses, inspect circuit board for burnt resistors or blown caps, the resistors will appear to be laying on there sides and have multi colored bands around them look for burnt or discolored ones, blown capacitors will look like tiny barrels with lids a flat top indicates a good capacitor as any humped or bulged or rounded top would indicate blown cap , if not more than a couple you may be able to replace these with success, be careful always Unplug from power before servicing electronic componants.

May 17, 2014 | Onkyo M-501 Amplifier

1 Answer

Y can't I get enough loudness out of my speakers ?

It is important to confirm if the amplification fault is with the amplifier or it is with a weak signal. So it is important to check your source with another amplifier or if you are using FM and still experience the fault then check if the ATTENUATION switch is activated which can reduce the main volume. Also check the speaker individually with a AA battery to get a good response.
If so there is fault in the pre- amp section Please test the other inputs available on the amplifier. Also if you are using the preamp out check the cords or the Input signal must be applied to all the source to confirm. This can also be a failure of the A/D input selector.
Take consensus as there are high density boards and will require help with jig to check the boards.

Sep 08, 2011 | Amplifiers & Preamps

1 Answer

Hello i have a marantz pm-47 amp that keeps blowing every time i plug in the power feed to the amp board i have changed the 2 caps on the board but still have the same problem i checked voltage for...

Hi mas_66,
Make sure that the fuse is the same rating with the old one.
If still symptom persist, I've suspected that your output IC is shorted.
You may hang this IC, then power up the unit.
Observe what will happen, if this cure the symptom then this is a clear indication that this IC is shorted and made the fuse blown while it is in the circuit board.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Mar 08, 2011 | Marantz PM-68 Amplifier

1 Answer

Gemini GA 2000 both 4 internal fuses keep blowing off.2 8amp and 2 12amp.Please what course this problem.

the power unit that feed the Amp is short this is why the fuse burn
its an hardware issue
if you want to fix the Amp let me know


Oct 14, 2010 | Gemini Sound Products P07 2-Channel...

1 Answer

My crate amp stopped working

If you overvoltaged it and the fuse is not blown, i would check for blown capacitors. Capacitors are supposed to have a flat top. If its blown it will have a domed top or have junk leaking out of it. Best to replace with same voltage and capacitance, though some can be replaced with different stuff... if you know the circuit :D. You can find capacitors on line pretty cheap.

Don't know what a capacitor is or unsure what a blown one looks like? Type "blown cap" into google image search. You will see a bunch of healthy and blown caps, Mylar and electrolytic style on the first page of results.

Dec 27, 2009 | Amplifiers & Preamps

1 Answer

The right channel has failed and I am looking for a schematics to facilate the repair

As far as I know, Gemini does not release schematics outside of their authorized service centers. If only one channel is out, you shouldbe able to A/B the two to find the problem components. If the side is completely blown, the most likely problem is the output transistors. Start with those and work back. If you need further details on the method, update this with any questions.


Nov 30, 2009 | Gemini Amplifiers & Preamps

1 Answer

Audiosource amp two intermittent distortion in monoblock mode

Good question, well constructed, a real fault report.

I would say from you fault description that maybe there is a dry joint / loose connection somewhere in the system.

So check all your wiring / connections.

Put the amp back into 2 ch mode and check each ch with the same source and load, do it both cold, and then drive the amp and do it hot do the shake test on both ch, cold and hot.

maybe this will help id the faulty area, if both ch have fault the it might be the psu as this is common to both sides.

If you can track down the fault to a or b then you can resolder all the connections on the board, if you are not happy with taking the lid off then take your amp with your test report to a tech, the test results may save you time and money.

Hope this helps, thanks for using FixYa.

Sep 24, 2009 | AudioSource Amp Two 2-Channel Amplifier

1 Answer

Used banana plugs for my amplifier, but bare ends of cable were too long, and then my amplifier short circuited. Silly. I would like to know if the IC is toasted or the power supply (or both). Is this...

If you were playing with the speaker out ----off sure the amp IC is blown or the related circute problem as occured
if you smell the shot circute ...tipically a silicon burn smell....then ...there is a problem in side....
remove the cover and physical check for the blown parts using a tourch if you fing any parts or the bord blackning.........
fault may be there\
some times with a small blown fuse replasement ...cure's it .........

Sep 20, 2009 | Amplifiers & Preamps

1 Answer

Carver M-400 popping and no audio

Sizable sparks at a cap~ base?? That sounds like there may be a dead short somewhere and/or catastrophic failure of the caps~ (not always visible on the components, use a multimeter to check the terminals if they are shorted.) If there is noting else that has failed in the amplifier other than the power supply* (*if applicable), it is repairable. Otherwise good luck finding the other fault(s)*.

Jan 23, 2009 | Amplifiers & Preamps

2 Answers

Fuses for P-07

the fuse you need is a t4al 250v

this is a common slow blow 250v 4amp fuse.

You can get them at RadioShack

Oct 03, 2008 | Gemini Sound Products P07 2-Channel...

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