HH Digital Delay unit-Schematic request

valvusmusicus

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Hi
Have a dead one of these-powers up, spring reverb works great, but the delay section is dead
Tried all the obvious-now in need of a schematic please

Thanks in advance
 

mrclunk

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Sorry, don't have any circuits but can u take some photo's?
Sounds cool!
 

MagnetoSound

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I would talk to Michael at MAJ Electronic, who hold the obsolete HH parts inventory.

http://www.majelectronic.co.uk/

Be sure to read their homepage fully before you make contact, though. He is a nice enough chap and very helpful, but he doesn't suffer fools gladly. Schematics are free but they charge a £5.00 admin fee for sending and Service Manuals cost a bit more.

Anyhoo, by the fault you describe I would be very suspicious of the array of SAD1024A delay line chips on the top PCB. If any of these are stuffed (more than likely), then you are SOL as there are none left at MAJ - and good luck finding them anywhere else.

 

valvusmusicus

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Hi
I contacted MAJ electronics-Just said SAD1024's not available
I guess, as Im quite experienced at fixing BBD stuff-schematic wont be needed
Ill post some pics ASAP

Paul
 

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