Philips PM3055 obsolete EHT replacement

[gkmaia]

I got a PM3055 with a faulty EHT.

ERO BG 2000-641-505 if the part number.

I can find lots of 2000-641 on ebay, but nothing ending with 505.

Also could not find any datasheet to compare them.

Anyone out there with some experience on these that could help me find a an equivalent replacement?

[shakalnokturn]

No experience with the peculiar model, as long as you have the same internals it should do the job.

Looking through photos I'd bet that the internals are a ll the same as long as you have BG 2000-641 then the last 3 digits define how many wires vs. solder lugs you get, HV wire length, anode connection type...

At the worst check the service manual, if it doesn't give you the number of stages in the multiplier straight-out you should be able to calculate from the given voltages.

[gkmaia]

No experience with the peculiar model, as long as you have the same internals it should do the job.

Looking through photos I'd bet that the internals are a ll the same as long as you have BG 2000-641 then the last 3 digits define how many wires vs. solder lugs you get, HV wire length, anode connection type...

At the worst check the service manual, if it doesn't give you the number of stages in the multiplier straight-out you should be able to calculate from the given voltages.

Thanks for you reply. super helpful. I do have the schematics and it shows the HV output voltage. But it does not show the input voltage on that particular winding.

[shakalnokturn]

At least if the transformer is still working you can measure the output, knock a suitable resistive divider together first.

Considering the HV winding's intermediate tap gives -2.1kV I'd expect the full winding to output something between 2.5 and 3kV amplitude.