Bottlehead Forum

Bottlehead Kits => Moreplay => Topic started by: tyasin02 on November 22, 2022, 03:15:20 PM

Title: 8 volts instead of 280. RAWB+ VOLTAGE TEST
Post by: tyasin02 on November 22, 2022, 03:15:20 PM

Now I have made it half way I guess .Getting 8 volts. Checked he wiring , cant figure it out .

Pics attached.

Thank You

Title: Re: 8 volts instead of 280. RAWB+ VOLTAGE TEST
Post by: Mucker on November 22, 2022, 04:51:51 PM

It looks like one of the two diodes attached to the power transformer at terminal 9 is installed backwards. Check your manual for the correct configuration.

Title: Re: 8 volts instead of 280. RAWB+ VOLTAGE TEST
Post by: Paul Birkeland on November 23, 2022, 04:23:40 AM

Along with the backwards diode, the red wire going to terminal 4 of the power transformer looks like it might be loose, as does the bus wire on the earth tab of the IEC jack.

For the STP wiring leaving power transformer terminals 6 and 7, if the shield foil sticking out touches one of the 220 ohm resistor leads going to terminal 6 or 7 on the power transformer, that can damage your power transformer.

Title: Re: 8 volts instead of 280. RAWB+ VOLTAGE TEST
Post by: tyasin02 on November 23, 2022, 01:35:37 PM

Mucker Thank you!!!

One diode backwards did the trick.

Ty

Title: Re: 8 volts instead of 280. RAWB+ VOLTAGE TEST
Post by: Mucker on November 23, 2022, 01:39:11 PM

Sure, no problem, but make sure to fix those things PB suggested. Really important to do so.