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thanks for that, i will get piccies of my amp on thursday when i am at home, i shouldnt have any problems getting hold of the resistors as im studying electronics engineering at university so i should be able to get some through the uni.
the capacitors sound right from what i can remember aswell except my amp has 8 of the larger capacitors. the entire circuit is on one board as opposed to two and the rectifier diodes are in two straight lines down the side of the board next to the capacitors ( obviously so they could fit the extra cap’s in. would be interesting to compare serial numbers and work out which of the amps is newer. will get pic’s of mine for all to see anyway and when i get my HH solid state amps back i will get some pic’s of them aswell and post them up.
Thank’s,
Owenhey, my amp has a white front. i don’t think the two resistors are the same value. or atleast from what i could make out they didnt look like they were in my amp (one of them was badly burned up though so hard to tell) i’ll take a piccie of mine next time im with the amp. i thought i had taken pic’s this time but when i went to load them onto the pc there wernt any on my dv cam 😳 i guess i will try replacing that resistor with one the same value as the one that is in there and power up without any valves in and see if the voltages are within spec for the ecc83’s. i’ll keep you posted. 🙂
thanks for your help guy’s.
Owenhey again,
thanks for your help, for some reason my computer won’t open the file you sent me, it downloads it and then it just complains that the file is corrupt, i will get some images of my amp up soon as the circuit layout is slightly different on mine, it uses a single board for the entire amp instead of the two boards like yours has and there are a few other differences like mine has 8 of the larger power supply caps and they are in two rows of 4 instead of the single row of 6 that yours has. could you tell me the value or colour code of the two resistors that i have put in the red box on this image please? if not then no worries.
thank you for being so helpfull,
Owen[URL=http://img292.imageshack.us/my.php?image=f7bdf29618aw.jpg]
http://img292.imageshack.us/img292/6825/f7bdf29618aw.th.jpg%5B/URL%5D
Hi again, the layout of the blue power supply caps on your super pa looks diffrent to mine, pretty sure mine has two rows of caps. i will have a look when i get home but i dont have internet at home so it might be a few days before i can post again. Infact i seem to remember my amp haveing a seperate board for the power supply caps and the rectifier diodes were in a straight line, i could be remembering wrong though, the two resistors i am talking about i cant actually see anywhere in that pic but i have a feeling they could be the two resistors that are going to the two caps in the bottom of the pic you posted. but i have a feeling mine are completely seperate and dont connect together at that side. i will have a look at that site and see if i can work it out. my email address is [email protected]. if you could send me the original image i would apreciate it.
Thanks for your help,
Owenhey all, i have a request for 1bassleft, i got given a laney super pa head that i want to modify in similar ways to what you have done but it has a burnt out resistor in the power supply section and i cant tell it’s value, is there any chance you could take a pic of the underside of the amp for me? there are two resistors next to the power supply cap’s, i think they are for powering the preamp section of the amp. my amp works fine except the preamp section is dead so any help would be apreciated. also you say your amp uses 8 x ECC83? mine has 7 x ECC83 and an ECC82. think it is useing the ECC82 as phase splitter, i’ll try an ECC83 in there and see what the difference is after i get it up and running. any help would be greatly apreciated.
many thanks in advance,
Owen
