save repair Westbury/Guyatone/Ampeg/Rozz ParametricEQ

[fe2cruz]

My Westbury-08 parametric Eq quit today. I thought it was a standard
neg center 9V but I may have been wrong. It worked and sounded great
on 9V daisy chain for a whole week but then just stopped.
The Aria ParaEq is probably more reliable and just as cheap but I kind got
attached to the big knobs and sound of this Westbury.

A 9Vbat showed it was pulling 14.6/17.90mA. I couldn't find a schematic
or manual online, but this spec sheet said it should only pull 6mA.
http://www.effectsdatabase.com/model/gu ... s00x/ps008
Its related to a few other pedals and has been written up with poor
reliability. Right now if I plug in 9V power supply it makes scary buzz but
the LED doesn't light up. If I use only a battery it overheats the battery
so it becomes too hot to touch in seconds.

Is there any thing else I can check with my multimeter on this thing?
Does anyone have a schematic or know of a better search than google
to find one? Can anyone recommend a good tech/repair service in
southern california that could work on this pedal without a schematic?

thanks,
-c

[htsamurai]

Hm...that's real weird, the title of your thread kinda threw me off though.
If your daisy chain fit it, it is likely 9v neg tip

[Scruffie]

Overheating Battery, Something Shorting, Post Gut Shots to check for blown Diode Protection etc. and check the DC Jack is working and the board is receiving proper power yadayada.

[fe2cruz]

Resistance at the battery terminal was .8 ohms. On a battery putting out 7 volts nothing happened,
on a battery putting out 9 volts the battery and a points on the photos got super hot.



I guess I'll try to replace that hot piece, unless you think I should do something more.
I'm so bad at soldering though. I'm gonna have to practice. So I can't just go and measure
the resistance on all the other pieces till I replace that hot one? I'd like to make one
trip to the electronics store if I could. I need ribbon and a replacement for that
burning up piece now for sure.

So as long as I can keep the draw at 6mA like the specs say I shouldn't short out
this thing again right? Are there any other precautions or mods I can do to this
thing that'll keep it from killing itself?