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Check the transformer... ...as I mentioned before, the resistance of the secondary windings. You might need a transformer. Also, those bulbs might have done it, so might want to get the specification for the OEM bulb, or get some bulbs (call Tascam).

Yea, I read that post earlier. Can't go by that. I don't know about P2, but it's shown as a connector on the schematic. It might be vertical pins soldered to the board with a receptacle housing pushed over it, but I don't know. Take a pic and send it.

O.k., ... I get it. Well, it could either be that the cap is installed backwards; or the silkscreen is wrong; or for that cap technology, polarity doesn't matter; or, in that part of the circuit, there's no DC across the cap. Can you measure the DC Voltage across the cap while the...

more more... Did you try just unplugging P2 (meter bulb circuit) and see if the mixer works?

more... Can you be more specific about this part of the experience? Also, how do you know that those bulbs are the correct replacement? Did you match up specs or part numbers? It may be possible that the 4 bulbs you put in ended up being too little resistance, and you drew more current...

I don't get it. You must have no real-life worries to be hunting down capacitor polarities! :) Seriously, I can't imagine that there's a problem here. Some types of caps have no polarity, like ceramic, while others do, like electrolytic and tantalum. The reason has nothing to do with the...

Got it... O.K., let's go back to the beginning. Did you replace al of the bulbs? Did you use exact replacements? If not, what were they? Did you disconnect, change or touch anything else? How much of this did you have to take apart to get to the lamps?

You're welcome Don't panic. It might not be cooked. Could be something simple and cheap. The way you measured might not show an voltage, if the output if the transformer is floated, which could be. Can you send the schematic? Or, take the board to a technician. Good luck.

How did you measure? Where did you put the meter probes?

Seek professional help I would leave it alone. It is surprisingly easy to electrocute yourself. think of what you will do with any debug information you get - if the transformer output is apparently O.K., then what? can you send the schematics?

a question I don't mean to be rude or presumptuous, but are you knowledgeable and skilled in electronics? If not, you not only are unlikely to fix this, but could cause more damage, and even hurt yourself (fatally). If you are, just check (I've made this mistake) - is the VOM set for AC...

If I'm winding tape from one reel size to another, say, in the extreme, a 5" plastic supply reel to a 10.5" metal takeup reel: 1. Is this O.K.? 2. hwo shall I set the reel size selector (large/small, Teac 3440). Thanks, jv

Strange... ...to me, anyway. Where's the wobble coming from? I would imagine there's a little end play in the motor shaft. Check to see that the brake is not dragging. Could be the brake solenoid or driver has failed, or is marginal. Might not detect this in play or FF.

Excuse? Surely, you jest. The thickest tape that I am aware of (and I'm new to this) is 1.5 mil (thousandth of an inch), which is equal to 0.038 millimeters (mm).

I'm no expert, but if you picked up a wobble, and the table isn't pulling the tape, I would suspect, in order: table has become loose on the motor shaft - check set screw worn-out motor bearing - much less likely, but would cause the same symptom

Did you mean 1 mil tape? 1 mm would be 0.040", like half the thickness of a nickel!

More... I wanted to follow up on this. First, Evan, thanks for sharing your knowledge, and your patience with me as I get up to speed on this topic. I referred to an "absolute reference" before, and expressed m dismay at not finding a reference to the fluxivity in the service manual: On my...

Thanks, Evan. I haven't read that paper, I will read it next! I appreciate your notes. I think I will try to get to the tech and have hims set it up at 250, for now, anyway, while I learn more about this (and gear-up with scope, signal generator and AC voltmeter). Is this an externally...

Interesting...more questions! Thanks, Evan. That's interesting. I ask, because the tech to whom I entrusted my newly acquired 3440 (my first reel to reel deck) advised me that 320 nW/m was what was necessary for modern tapes, and that he sets many decks to that level. He didn't indicate that...

(Newbie question) If my deck is set-up for modern, high output tape with the fluxivity set for 320 nW/m at 0 VU, will I still be able to listen to old (1960's) pre-recorded tapes? Thanks, jv