Rgv40 nvasion halp!!!

[Kich]

Available in combo guitar for 5 watts output tube Invasion RV40
Stuck rare it seems. Information on the network is not completely except for a couple of posts on one forum that has been placed in a shop with epifonami. Indeed in some detail is epifonovskaya labeling. Appearance - EPIPHONE VALVE SPECIAL yes and line-of detail - is similar. The three lamps. Two on the front and one on okonechnik. The main difference - in speaker. Here is noneym unmarked at all! Even the resistance is not specified. The sound was ... shorter than lying idle in my more than a year. Sound - wool. On the computer acoustic sound was better. I have a good guitar. Kastomovy American Scheckter. This combo sadil her sound just under zero. Therefore pylilsya idle. I decided recently to sell it. Well, just remember, it once again to climb up online and read that this is the same epifon done in the same shop. He pulled out a card and there is - there epifonovye labeling. On the advice from the same forum amputated unit DSP. That's where the sound appeared ... And to sell even got sick. I decided to change the speaker. Changed to JENSEN 10Q. Now sound no different quality for the worse from those not modified epifonov've heard on YouTube. Still, all these aggregates from epifona need modification. I realized this already. The roots of the block DSP continues bad sound. Just something to cut the high frequency gently. And a constant background - a disease of all epifonov also eliminates the replacement of some parts. Called into service - they said to try to change the capacity of food to eliminate the background. I'll try. But now the rest ... And most importantly - where to throw a bypass to bypass the block DSP? " I found pictures online payment EPIPHONE VALVE SPECIAL, indicating where you need to pave hinged bypass, but one set of parts, and wiring on board differs greatly from EPIPHONE VALVE SPECIAL. Can somebody suggest looking at these pictures - what should I do?

RGV40 INVASION:

View of the fee from the details:

Imageshack - img6552o.jpg

View of the fee from the tracks:

Imageshack - img6550.jpg

Combined: track and parts. View of the fee from the details:

Imageshack - img6550.jpg


EPIPHONE VALVE SPECIAL:

These pictures found in an Internet.

On top of the card to the details:

Imageshack - image082o.jpg

View of the track (shown horizontally):

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View of the track (shown horizontally) with sovmeshennymi some details (which dismantled) (jumper present - the red arrows are missing - blue):

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With one of the forums for EPIPHONE VALVE SPECIAL how to bypass the CPD and to improve the sound, but I have a layout of the motherboard is different here, and if so to do, simply excluded from the capacitor to short circuit near the two resistors on the second and the third lamp. The board also EPIPHONE VALVE SPECIAL there the road goes to the DSP ...


Imageshack - 1005106.jpg


Thank you! Sorry my inglish pleace!

P.S.
A scheme could anyone have? Or who can draw? Or compare with the scheme EPIPHONE VALVE SPECIAL middle of painting and the differences? I can not do it himself.

Here is a man GA modifies - say, too close relative. In the same shop is
http://www.transartistik.net/mikka/s...?id_article=26

The scheme seems EPIPHONE VALVE SPECIAL:

[Kich]

I see no body who can give answer fore me there. Here is not realy professionals. All people just bla-bla-bla.
I am disappointed.

[olddawg]

Not quite sure what you're asking. You might want to check out an Epiphone Valve Jr schematic or a VJ forum and see if it is similar if it's a 5 watt single ended amp. Also seawatt.com. I do know that insulting the serious professionals on this board won't get you much. Their time is valuable and usually very much appreciated.

[tboy]

Blah-blah-blah.

[Steve Conner]

Ваш пост невозможен читать из-за бедного машинного перевода! Пожалуйста уйдите.

[Kich]

I have the power apparently not different from the EPIPHONE Valve Special and the inside is very similar. Parts inside the same. The board has marks Valve Special HB01573 VER050728 and the output transformer is marked Valve Junior. That in itself is very interesting, I think. This seems to produce EPIPHONE by an unknown label Invasion. How can this be?
That's interesting.

I just want to make a bypass DSP. And ask about this.

Time professionals - expensive? Yes. At work - yes. Or advice on the forums have paid the same?? But for a real professional enough 2 minutes to see my pictures and to indicate where you have to intervene in the scheme. But this is for real professional who understands this jobe.

[Kich]

So see? Sorry. I did not want to offend anyone.


Hi everyone! I have an amplifier. Invasion RGV40.

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Imageshack - img6510d.jpg

This amplifier is not different from the outside Epifone valve special. Internals are very similar as well.

Imageshack - img6512e.jpg

Imageshack - img6513q.jpg

Imageshack - img6514q.jpg

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A set of parts is the same. At the internals is marking Epifone.
Amplifier assembled in the three lamps as Epifone valve special.
He also has a block of DSP. I need to work around it! But the roads on the board are different from Epifone valve specialists. Although it is possible scheme is no difference. Help to identify these photos where you want to do circumambulation DSP please! And if there are other ideas for modifications - contact guys!

View of the fee from the details:

Imageshack - img6552o.jpg

View of the fee from the tracks:

Imageshack - img6550.jpg

Combined: track and parts. View of the fee from the details:

Imageshack - img6550.jpg

Can you find differences in the scheme with Epifone Valve special? Thanks to all who can help and point where I need to make a bridge over the CPD. As well as other modifications!

So see? Sorry. I did not want to offend anyone.

[J M Fahey]

Hi kich.

Can you find differences in the scheme with Epifone Valve special?

Unfortunately you do not provide any schematic at all.
Given your amazing Photoshop skills, you already have 30% of the work done.
I'm sure you'll draw an accurate one in a very short time.
When you have it, post it and I'm sure some of us "technicians" will be able to help you.
All I see in your pictures is a 3 tube guitar amplifier, no DSP.
As a side note, I think the Epiphone Korean OEM supplier is illegally building quite a few "extra" ones and dumping them on marginal markets.
Waiting for your schematic (don't even need the Epi one).
Good luck.

[Kich]

Thank you very much! I'll do it.

[J M Fahey]

Don't get crazy drawing everything , mainly follow all tracks that go to that multipin connector on the left, and draw the audio stages (tube or op amp) that are before and after that point.
As I see it, may be wrong, probably audio only uses three of those tracks: send, return and ground, and most others , the ones that have similar (same value?) resistors in series maybe encoder pins.
I'm guessing wildly because I do not only know nothing bout digital stuff, but also hate it viscerally, so do your homework.
(And no, it will not take 10 minutes).
Good luck and lots of patience.
PS: if you had a scope and generator, you would probably find 2 tracks/pins, sending and receiving analog audio between 100mV and 1V.

[J M Fahey]

Hi kich.
Now that I have slept a couple hours, have researched a little, and what have I found?
1) you posted this exact same question in Guitar-Gear.RU
2) you got a grand total of 1 (one) answer, by a fine guy called "seeman", who basically told you "do your homework", meaning you should draw the layout and schematic so you can see how to bypass the DSP board.
By the way, I loved his avatar.
It would be the king of cliches having a Russian choose a Bear, in this case playing a guitar.
That's exactly what he did, yet the result was so cute we have to applaud him.
Here it is: "SEEMAN"
3) now on to serious matters:
your Invasion RV40 is an Epiphone Valve Special , only it's a different batch or version, with very minor changes, and basically 95% of the schematic applies.
It shows that you need to do nothing at all, because the DSP board is wired as a parallel effects loop (or like a classic spring reverb, which is wired the same way).
There already is a direct sound path bypassing it, also some sound goes to that board, gets processed, and comes back, having its own volume/intensity pot, later being mixed with the original sound.
So, the 2 minute answer you asked for is: just turn the damn effects pot down (off) and the DSP remains fully out of your life.
You can even unplug it and throw it away.
If you still find the amp sound dull (you called it "wool" sound), look somewhere else for the culprit.
Big suspect: the no name speaker they used, although your substitute Jensen C10Q must have improved sound a lot.
If you want to improve it all the way, junk the board you have, all of it, although you can reuse some parts, and build an AX84 P1 there, or something similar.
Sound will be killer.
4) You should do it anyway, the original board design is a mess/very poor
Good luck, and send some vodka, he he. Some Stolichnaya will do.
PS: now that I remember : what did you mean by calling us a буржуйских форумов (Burgyesinsky Forumov or Bourgeois Forum according to my very rusty Russian)
I had thought this old Capitalism/Communism dispute was over

[Steve Conner]

what did you mean by calling us a буржуйских форумов (Burgyesinsky Forumov or Bourgeois Forum according to my very rusty Russian)
I had thought this old Capitalism/Communism dispute was over

Lol! We're a Bourgeois Forum. That made my day.

Thanks for your effort JM, I couldn't be bothered even trying to understand this thread. Got to go and oppress some workers now.

[Kich]

Thanks guys! Burzhuyskie - it is Russian slang for the internet. :-) We have this concept means foreign. :-) At this should not be offended!
At the expense of vodka ... will be in Moscow - Stolichnaya for you! Stolichnaya - not the best choice. :-)

JENSEN sounds great. Now I will change the output transformer.
About DSP:
After removal of DSP is part of it stay there - reverb that does not work without it, but is powered and connected to tembrblok.
I did a bypass on the advice of a good man.
The sound became much cleaner.

[Kich]

Hi guys! Sorry for my long silence! I was very busy.
I did my "homework". I painted scheme on my board. The scheme which I painted is absolutely identical to the valve Special latest models!

A good professional Chris Gordon told me to it and showed how to do bypass DSP.

http://img689.imageshack.us/img689/6282/mod1c.jpg

I did it. My amp has a good sound now. However, not enough highs. And has the background noise...
Also has a weak effect of the limiter. With good attack. High surge in volume and a slight decrease immediately after. What could it be?

[J M Fahey]

OK, glad you solved it.
What I'd love to see is that mod on the schematic, to see what was really done.
Please post it.
Thanks.