IcePower 200ASC amp module

So a stock fault means what was in there was not right spec. I would trace out the associated comps to get an idea what it was doing. Condsruction type of cap? Volume would give , for the type of construction, assuming 400V rating an idea of its capacity. Put 2 caps in there of 250V rating or 1 600V rating and whatever nF will physically go in there.

Do barrel format SMD-R have a higher voltage rating,r for r, than slab formats?

another way to figure it our is this...

look up the data sheet for the active devices on the board.

often the data sheet will have schematics for example applications and often the UUT is pretty much exactly like the app notes.

M

Perhaps the supervisor IC, nothing of use on driver

another way to figure it our is this...

look up the data sheet for the active devices on the board.

often the data sheet will have schematics for example applications and often the UUT is pretty much exactly like the app notes.

M

Cheers, I am being a bit lazy, but you do tend to learn a few things by asking questions here as well :)

Page 2 - the cap is probably a small bypass cap not on the schematic on the transformer HT winding to ground.

Thing is, this component looks like the achilles heel in this particular design, unless duff components were sourced. Else something else is blowing the component.

Gareth.

The Rs and C connected to CS pin3 of the supervisor?

Failure of this cap blew the PCB mounted mains fuse, rendering the unit dead and requiring repair, so this is definitely a known issue.

Gareth.

This DVD apparently uses NCP1203, not downloaded the schematic though

Shinco DVD-2610 on Elektrotanya assuming the SJK is an HV diode and 2x 4148 in the pic, then probably much the same circuit

Right, now I'm back in the lab, turns out this really is just a bypass cap, it's connected directly accross the main HT cap. I had at first assumed it was connected to the current sense circuit or thereabouts.

No bypass caps on any of the other circuits using this controller though, I guess a high voltage 0.1uF will do. (not SMD this time)

Thanks for the schematic links,

Gareth.

I wonder if it was a multi-layer cap in there with metal migration growth leading to short. Any other similar caps on there?

I wonder if it was a multi-layer cap in there with metal migration growth leading to short. Any other similar caps on there?

Not my photo, but this is a new PCB:

My blown cap is the one in the middle of the bottom of the PCB, below the 3 parallel sense resistors and between FET TR200 and Tx T200.

Gareth.

I wonder if it was a multi-layer cap in there with metal migration growth leading to short. Any other similar caps on there?

Not my photo, but this is a new PCB:

My blown cap is the one in the middle of the bottom of the PCB, below the 3 parallel sense resistors and between FET TR200 and Tx T200.

Gareth.

This small SMD cap is carrying rectified 240v mains voltage. Is that wise?

Gareth.

I suppose a 400V MLCC can suffer from metal migration as the numerous

50V notorious MLCC failures. I've not looked for any manufacturers of 400V rated devils, I assume they exist, should anyone be foolhardy to use them

So SMD 400V MLCC caps do exist (or did exist)

non-stocked, none on order, I wonder why

El jueves, 21 de julio de 2016, 20:31:31 (UTC+2), Gareth Magennis escribi

ked

ly

e

is

Hola, el condensador es de 2,2pf 2kv y poner un fusible de 3,15a y a funcio nar.

responding to

, Hugo wrote: I have exactly the same issue with mine!

Did you happen to find the right part? Would love to know what to replace it with.

Cheers

Hugo

responding to

, Hugo wrote: I have exactly the same issue with mine!

Did you happen to find the right part? Would love to know what to replace it with.

Cheers

Hugo

I used a non SMD cap, read the entire thread.

Gareth.

Google translation. Hi, the capacitor is 2.2pf 2kv and put a fuse of 3.15a and run. Mikek

--
This email has been checked for viruses by Avast antivirus software. 
https://www.avast.com/antivirus