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Old 22nd Nov 2022, 8:21 pm   #33
waynej4
Triode
 
Join Date: Nov 2022
Location: Chatham, Kent, UK.
Posts: 16
Default Re: Quad II problem - Rectifier blowing (GZ32)

Quote:
Originally Posted by cathoderay57 View Post
Quote:
Originally Posted by waynej4;1515547,

For the "Bad" amp, I get a reading of 250ohms from the Y terminal. For the "good" amp it is around 6Mohms. Same for the C4 Cap.
250 Ohms from Y terminal to chassis is bad. So the next step is to disconnect wires from the rectifier cathode circuit, i.e. Y terminal and then the choke and recheck resistance to chassis. Unless you have misconnected the earth wire to the 32+32uF cap, so make sure that hasn't been done.
Jerry
For my clarity:
1. Remove the wire from the Y terminal and measure resistance from Y to chassis?
2. Remove the choke (Y terminal still removed) and measure again from the Y terminal?

Or should it be remove Y terminal and choke and then measure from Y - all in one step?
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