This power amp got fire in the power supply section.
As you can see from the pic, the PWM module has melted.
I wonder, does it worth replacing it? Is it available?
All power supply IRFPs are blown/melted.
The main board does not have severe damage, from the melted module.
I think that after some careful cleaning, it can be repaired....
The class D section seems OK.
Please i need some experienced advice on this
As you can see from the pic, the PWM module has melted.
I wonder, does it worth replacing it? Is it available?
All power supply IRFPs are blown/melted.
The main board does not have severe damage, from the melted module.
I think that after some careful cleaning, it can be repaired....
The class D section seems OK.
Please i need some experienced advice on this
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These often burn badly but can sometimes be saved but yours appears to have burned so badly that the connector has broken away from the driver board. Is that correct?
No, actualy i removed the burned module, after trying to desolder whatever pins could be desoldered....the rest ones, i cut them.
Is this module available to buy?
Most of the damage to the mail board was caused by the SMD electrolytics in the module that melted/exploded.
The underside of the main PCB is in repairable condition...
With a q-tip and alcohol, i think i can save the main PCB.
Problem is with the gate resistors of the IRFP064.....ALL burned-could i find their value?
Is this module available to buy?
Most of the damage to the mail board was caused by the SMD electrolytics in the module that melted/exploded.
The underside of the main PCB is in repairable condition...
With a q-tip and alcohol, i think i can save the main PCB.
Problem is with the gate resistors of the IRFP064.....ALL burned-could i find their value?
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I don't know if the driver boards are available.
The resistors are likely 47 ohms. I've seen 27 and 47 ohm resistors used with the IRFP064s. Anything in that range should work.
Most of these boards start burning at the driver transistors and burn down to the main board.
The resistors are likely 47 ohms. I've seen 27 and 47 ohm resistors used with the IRFP064s. Anything in that range should work.
Most of these boards start burning at the driver transistors and burn down to the main board.
Yes i agree.
Do you confirm that this kind of damage is worth repairing?
What would you do in my shoes?
I confirm that one gate resistor i measured was 33 ohms.
The rest of them , i do not know.
I suppose there should be two PNP and two NPN current drive transistors that are burned on the right side of the PWM modulde.
Do you confirm that this kind of damage is worth repairing?
What would you do in my shoes?
I confirm that one gate resistor i measured was 33 ohms.
The rest of them , i do not know.
I suppose there should be two PNP and two NPN current drive transistors that are burned on the right side of the PWM modulde.
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@ Luka:
I think the amp was directly connected to a battery...
A 200A fuse might be difficult to blow....
@ Perry:
Yes, my board seems to be a bit different.
There is a D7 close to pin 5 of 293, that is not installed in your board.
Is your board also an S-2000D?
You can see the version of this amp in the uploaded pic of post #7.
I think the amp was directly connected to a battery...
A 200A fuse might be difficult to blow....
@ Perry:
Yes, my board seems to be a bit different.
There is a D7 close to pin 5 of 293, that is not installed in your board.
Is your board also an S-2000D?
You can see the version of this amp in the uploaded pic of post #7.
Attachments
ultra:
The missing diode (D8) was a factory defect, I believe. Other boards had the diode installed.
The board is from a Hifonics amp.
luka:
I don't think they use flame resistant boards for the driver boards. On the ones I've seen, the driver transistors fail and the board begins to burn. In most cases, the main board isn't damaged but with the amp mounted with the feet of the amp on the floor of the vehicle, the flames travel up to the main board. The amp is upside-down in the photos.
The missing diode (D8) was a factory defect, I believe. Other boards had the diode installed.
The board is from a Hifonics amp.
luka:
I don't think they use flame resistant boards for the driver boards. On the ones I've seen, the driver transistors fail and the board begins to burn. In most cases, the main board isn't damaged but with the amp mounted with the feet of the amp on the floor of the vehicle, the flames travel up to the main board. The amp is upside-down in the photos.
Perry, you mean that i can use a Hifonics module instead?
The owner of the amp wants me to go ahead and repair his amp.
For now, i ordered thr IRFPs 064 fets, and i need to know about the PWM board.
The owner of the amp wants me to go ahead and repair his amp.
For now, i ordered thr IRFPs 064 fets, and i need to know about the PWM board.
Many manufacturers use generic driver boards. If you can find a Hifonics amp that uses precisely the same board as the one in your amp, it may be available from hifonics. You should also check with the manufacturer of the amp to see if they will sell you one.
I have good news from the local dealer....he is willing to provide all spare parts needed for this amp
Thats great news!
I also learned from the owner of the amp that he has ordered a re-cone kit for his sub...not so good news for me....it means that the class D section is also damaged.
Thats great news!
I also learned from the owner of the amp that he has ordered a re-cone kit for his sub...not so good news for me....it means that the class D section is also damaged.
hi ! I have problem with one of SPL s-2000d. it burned and engineers has changed fet`s. but it doesn't fixed a problem. They said pre-amplifier isn't work so properly, and he can't fix problem because numbers of parts are unreadable. so any body had ideas?
I am still waiting for the owner to provide the parts...its a cost of around 160 euros.
When he does, i will post back.
When he does, i will post back.
a couple of years later
Finally, the owner never came back with funds for the parts/labor.
I will repair it for myself. I bought a new driver board so far and i wonder if anyone has high resolution pics of the area where the board is connected to the main board.
An underside pic of that area would be of great help.
Finally, the owner never came back with funds for the parts/labor.
I will repair it for myself. I bought a new driver board so far and i wonder if anyone has high resolution pics of the area where the board is connected to the main board.
An underside pic of that area would be of great help.
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