OK,Thanks,Enzo! I ask some [maybe obvious] questions just to be sure I understand the theory,which helps prevent mistakes in general!

Quote from: DrGonz78 on August 23, 2018, 04:14:12 PM

You can measure those two bigger filter caps with your DVM to see if they are holding a charge. Chances are the caps discharge rather quickly and probably only millivolts will be stored. Still just put your meter across each one and check the voltage so you know. You don't have to discharge any of the other smaller caps.

Measurement of capacitor residual voltage:

1]Measurement on the DC voltage scale?

2]With power cable disconnected?

3]This won't discharge the capacitor?

4] or damage my simple meter?

I'm about to remove the failed TDA2030 IC Chip.
Are any other tests,etc you think I should do first?

Can I use a screwdriver to discharge the 2 Large Capacitors : 2200 microfarads,25V or is it better to use a resistor? .
Other Capacitors are much smaller: 100 microfarads or less.
Do you suggest discharging them all 30-40 of them?

OK-will correct that! Now with meter set to the 200V range, I get a reading of -5V [DC]
[touching red probe to red speaker lead, or +5V when reversing the probes].

Also with meter is set 20V I get the same readings.

What does -5V DC [offset?] mean?

Using the DC Voltage meter, set to the 200mV range, I get a reading of exactly negative 1 when I touch the red probe to the red speaker lead [or a reading of  positive 1 when  reversing the probes].
This never fluctuates when slightly adjusting the contact with the probes, so I don't know if I  trust the reading .

I also smell a burnt/burning smell when I turn the amp on, on so I don't leave the amp on long. [I don't allow the amp to warm up for 10 min, as suggested in the guide.]

Where would you suggest I buy the chip?

What do think of a $1 TDA2030 IC Chip from China?

https://www.wikihow.com/Measure-DC-Offset

I will measure DC voltage at the speaker connection using a VOM [is this similar to DC-Offset measurement in link above as described above?],& with amp on ---correct?

I no longer know the polarity of the red & blue speaker wires coming from the amp to the speaker. 
Can I damage the VOM by connecting the positive probe of the VOM to the negative speaker wire, or vice versa?

IC Chip  says: TDA2030A . Thanks so much! This is exciting for me!

IC Chip   says: TDA2030A Do you need the rest?

D6 Diode: the top leg is burnt a bit!

Will measure DC voltage at the speaker connection [w speaker disconnected]: with amp powered on?

Here's pic's. I guess it's a discrete transistor device. Is the power amplifier a set of components? & will they all need to be replaced or I must diagnose faulty components? Note: made in 2008. I have experience soldering.
How long might this take & how expensive?

I would appreciate any advice repairing Solid State Pyle-pro PVAMP30 30-watt Guitar Amp after a short circuit--The amp only hums & the pilot lite comes on.

I needed to demo a Denon AVR-4800 home theater amp [250 watts per channel] for a buyer,but I had no speaker available.
In a hurry, I connected the Denon amp speaker outputs to the Pyle guitar speaker input clips,
but did not disconnect the spade end plugs that lead from the Pyle guitar amp section to the guitar speaker input clips.
And I accidentally powered on the Pyle guitar amp.

Increasing the volume at the Denon amp I finally heard a screech & maybe a pop.
Now the Pyle guitar amp only hums,& there's no amplification--the pilot lite comes on [so the fuse is still good].

I opened up Pyle guitar amp section [I WAS careful to unplug the power cable first & not to touch the capacitors.]

I don't see or smell any damage & I don't see a 2nd fuse.

Haven't been able to find a schematic after  a bit of searching.

Should I send photos of the circuit board?