Hi there,
i have a SPL Dynamics S2000D, Powersupply was broken, few parts on the Driverboard from PWM was missing, but i got this fixed. PSU runs fine.
On the output section i have only on 4 of 8 Fets signal on the gates.
From the IRS21844 the LO-signal works. The HO don´t.
When i measure on VB-pin, i have only few milivolts. Could this be right?
Thanks
i have a SPL Dynamics S2000D, Powersupply was broken, few parts on the Driverboard from PWM was missing, but i got this fixed. PSU runs fine.
On the output section i have only on 4 of 8 Fets signal on the gates.
From the IRS21844 the LO-signal works. The HO don´t.
When i measure on VB-pin, i have only few milivolts. Could this be right?
Thanks
An externally hosted image should be here but it was not working when we last tested it.
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Without the FETs in the board, you won't have high-side drive supply which means that you won't have have high-side drive. I use a 9v battery connected across the high-side filter capacitor to provide the supply voltage.
Terminal 11 = negative.
Terminal 13 = positive.
Terminal 11 = negative.
Terminal 13 = positive.
That means i should try it with fets in the output section? Error was the broken power supply with the missing driver fet.
That's up to you. There are multiple options. Making sure you have drive before you install the FETs is less risky.
Why did you pull the audio driver board?
There are a lot of damaged vias in the main board. The damaged copper can be seen on the legs of the headers. If any of those cause the connections to be intermittent between the two boards, the amp can fail.
Why did you pull the audio driver board?
There are a lot of damaged vias in the main board. The damaged copper can be seen on the legs of the headers. If any of those cause the connections to be intermittent between the two boards, the amp can fail.