Not getting any sound ? thanks
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Not getting any sound ? thanks
Yes that is what I was asking , just trying to determine if the reverb trans is ok ..thanks
Should I be showing resistance between the reverb in and out at the amp ? thanks
sorry misread my meter , the tank does spec out correct ... Can I check the transformer ?
MOD 8AB2A1B In 1.3 ohms Out 224 ohms . Yes I switch the in and out cables , thanks
I recently acquired a Mesa .50 Cal. + Combo. The amp come without a reverb tank.
Ordered correct new tank with new cables... no reverb .
Change out AT7 in V4 ... no reverb. I can tap tank and...
I have a fender deluxe trans I'll try this evening...thanks... I was lucky to have a good 6BK11 that was in the tremolo side. Also I bought the 6c10 new.
Didn't matter were i put them same...
yes my bad I have the 6bk11 installed . the 6c10 will work as a replacement I've used them before. I've put the good 6Bk11 in V2. The V1 is just for the tremolo.
Thanks ... I still believe it's down...
Recently acquired a ampeg J-12D . Seems to have only about 1/2 volume. I install a filter cap kit from fliptop.
Swapped all tubes , new 7591s, one good 6k11 and a new 6c10... I have check all...
This Silverfaced Twin has the master vol. I'm getting different bias readings then the schematic shows.
Transformer lead 59vac after rectifier diode -48.4V and back of the balance pot -38.8V . The...
hope this works thanks ...thanks 39601
When switching between the clean and crunch mode the volume will decrease a good 10 to 15db.
When I adjust the volume "up or down" it will go back to original level. Changed vol. pot but same issue....
Just and update...Went back thru and check , tightin and reseated all cable and wire connections and it been working with no problems.
Gotta believe one of those connections was the problem...thanks
Great all set up for my testing , inject my 100mv ...switch on... and a short pop and everything back to normal !!!!
I probe , wiggle, smack it , and still works fine... I really need this amp to...
The head is about 3years old "over the warranty I'll go ahead start with what you recommend... still wish i could get a schematic...thanks
I'll get on it ... thanks
I just have my Fluke 83, would that work ? thanks
I recently acquired a Acoustic B800H head. Worked great for 3 mos. and then slowly but surely died.
When first turned on, it would distort but about 30sec. later would clear up and play fine for...
Yes that got me back to -52Vdc ...I guess looking at that rectifier set up screwed with me thanks...
I'm pulling -50Vdc on pin 5 of #2 6L6 ...But on #1 6L6 pin 5 is 330+Vdc thanks
I have a Blackface Tremolux that red plates first 6L6 immediately. Somebody has taken the rectifier and converted it with a solid state mod.
I think that was done before the amp started having...
Problem Solved...When Enzo gave me the clue to check out V2's path I traced it back to pin 2... when amp got quiet I sprayed C5 & C6 area with freeze spray
and instant snap, crackle, pop ! Replaced...
ok finally back at this , checked solder joints ok , treble does't effect noise, when I grounded pin 2 everything went quiet, pin 7 no change.
After about 45min everything quiets down but you can...
Thanks Enzo you've help me freeze spray before...lots to do tonight...thanks everybody
thanks...I'll try that next.
replaced with new cap...a little better but still here that pop and crackle in the back ground. the ac ripple does'n't seem as bad.
The amp plays great nice and clean, does'n't crap out when you...
yes I'll dig it out and give it a try...thanks