Studiomaster 2000e repair help

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   no tipsy amp repairs please, it will end in tears.  

1. ascertain if its an output module or something else.

(swap entire module from one side to the other)

2. either repair the 'something else' (pre amp) or 

3. ascertain whether the faulty module is the switching or amp pcb 

(swap boards with well-marked good side)

4. Go over the faulty board part by part. On a simple amp like this its quicker to cold check components rather than get in an endless loop with signals and offsets and long tailed pairs and whathaveyou.

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kedwardsleisure Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4670	Post Options Post Reply Quote kedwardsleisure Report Post Thanks(0) Quote Reply Posted: 14 June 2022 at 5:00pm
	no tipsy amp repairs please, it will end in tears. 1. ascertain if its an output module or something else. (swap entire module from one side to the other) 2. either repair the 'something else' (pre amp) or 3. ascertain whether the faulty module is the switching or amp pcb (swap boards with well-marked good side) 4. Go over the faulty board part by part. On a simple amp like this its quicker to cold check components rather than get in an endless loop with signals and offsets and long tailed pairs and whathaveyou.
	Kevin North Staffordshire

Randy Bohannon Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 29 May 2022 Location: London Status: Offline Points: 21	Post Options Post Reply Quote Randy Bohannon Report Post Thanks(0) Quote Reply Posted: 14 June 2022 at 5:10pm
	Thanks Kev, definitely no tipsy amp repairs. The weather is so glorious I’m going to be bbq’ing in the garden and not hunched over that infernal amplifier. Your methodology makes sense, this was the better of two blown modules and so I had hoped that it would be more likely to work. I’ll go through the other one, swap halves back and forth and see if I can get any further.

jbl_man Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 12 January 2005 Location: London. Status: Offline Points: 11001	Post Options Post Reply Quote jbl_man Report Post Thanks(0) Quote Reply Posted: 20 June 2022 at 3:27pm
	Any update on this Randy?
	Be seeing you.

Randy Bohannon Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 29 May 2022 Location: London Status: Offline Points: 21	Post Options Post Reply Quote Randy Bohannon Report Post Thanks(0) Quote Reply Posted: 21 June 2022 at 9:44pm
	No update as yet I'm afraid. I got mixed up in a Yamaha M85 and the active crossover in the car has just died and so it's gone on the back burner for now. I'm going to rebuild the other module so I can do some swapping around, hopefully in the week.