900W H-class PA Amp with Limiter

[waylene]

Just want to ask! Is this the same signal connection on H900 as on B500?
I started amp with rite power supply, but no sound out of amp.
This amp (H900) nothing heat up or blow on amp, but still not got sound out of it. See attachment.

 

[waylene]

Any ting wrong here on my H900?

 

[Zinyx]

Show bottom PCB

 

[waylene]

You see white cable there, is input ground connected to main ground on center tap like 0V.

 

[waylene]

Right side bottom part of H900.

 

[waylene]

Right side bottom part of H900.

 

[waylene]

Left side bottom part of H900

 

[gantex]

If sure psu is normal, please check 15 volt on ic ne ,make sure this work. Are u use protector or not?

 

[waylene]

No I don't have protector on amp. Can you show me where must I test on IC sir? Like where must I put multimeter propes on IC.

 

[gantex]

Any suggest if i use wood box. I mean for grounding connection ?

Regard.

 

[waylene]

OK yes that will I do Sir! Do you thinks it is a big problem I got on my amp?

 

[waylene]

This is the first time I try to build H900, I build B500 and it work very good, with the help of Sir Jay Irvyne. Look at my B500 here.

 

[gantex]

No I don't have protector on amp. Can you show me where must I test on IC sir? Like where must I put multimeter propes on IC.

ok, thats good step for test. U can check this voltage between R 2k2 and zener 15v. Put multitester red to this, and black to ground. This for +, and check - too.

 

[gantex]

This is the first time I try to build H900, I build B500 and it work very good, with the help of Sir Jay Irvyne. Look at my B500 here.

look verry nice sir..😉

 

[waylene]

Can you send me a drawing to explain me much easier Sir? or can you show on the photo I send you, just to make it easier for me to follow. Sorry Sir, I'm just a small learner in building amps.

 

[waylene]

I drive four 15inch 400watts @8oms speakers on my B500. Look at pic here.

 

[gantex]

Can you send me a drawing to explain me much easier Sir? or can you show on the photo I send you, just to make it easier for me to follow. Sorry Sir, I'm just a small learner in building amps.

ok sir, no problem, but i use phone at this time, maybe later id u can wait 🙂

if not, try this, this amp same with b500, just this amp have stepper. U can check any error with b500 u have.

 

[waylene]

Ok thanks Sir, I rather wait for you! Because I all ready check H900 with B500 pre amp side. The middle side where ic set on. What I mean the input signal on H900 is exactly the same on B500.

 

[JOHN BALI]

Hi, you can use H900 as B500 to check where is the problem.
remove IR2117 & the mosfets, then jumper the pad D-S of the mosfet(pin 2 & 3).

Power it with B500 supply on HV+ & HV-
(MV+ & MV- not use for this test)
& if it is can work,
you need to check the stepper only

 

[gantex]

Can you send me a drawing to explain me much easier Sir? or can you show on the photo I send you, just to make it easier for me to follow. Sorry Sir, I'm just a small learner in building amps.[/QUOTE

look at the pic , i make a red and black circle test point. Color i give same like multitester probe u have. I hope this will help u sir.

Regard.