I bought it. I got the postage down to $15.00. When it gets here I will get some better pictures, inside and out. Glenn

I bought it. I got the postage down to $15.00. When it gets here I will get some better pictures, inside and out. Glenn

He appears to have quoted a typical google books scan. Glenn

When these fanatics pay $2500.00 for a 1.5 meter power cord, where is the limit for tubes. See:?? https://www.essentialsound.com/essence-power-cord.htm Glenn

Eliminate the question and get proper desoldering equipment. PACE makes very good desoldering equipment and it is available on EBay reasonable. Hakko also makes good equipment. These will not damage t

If you replace all the electrolytics in the power supply, you have a 95+% probability of fixing the supply. Replace the caps with 105 degree C parts and select parts that have the lowest ESR and will

Was the cap red? I had a 453 MOD703H with no HV. Found the red doorknob 500 pF HV filter cap had arced internally (saw the blackened area through the translucent red epoxy). Replaced the cap with a ce

The dim traces on the vertical part of a square wave is normal. This is due to the speed which they are "drawn" on the CRT face. The faster the rise time of the trace, the dimmer the trace will be. Th

Where I used to work, we used optocouplers to Isolate TELCO ring from our circuit and detect ring. We found that as the opto aged the ability of the photo device to see the emitter decreased. We repla

CRxx indicates "Crystal Rectifier" with a sequence number. Crystal Rectifiers are diodes. CR17 would be the seventeenth diode inserted into the schematic. Due to revisions and other reasons all the se

You have one what?? Glenn

What did Tom recommend? Glenn

Could photos that have been posted for over a predetermined time be resized? This should free up storage area and retain the photos for history. If the photo author is posted with the photo, and someo

IPC J-STD-001G states: 7.4 Installation of Surface Mount Components Surface mounted device leads or components shall not [D1D2D3] be pressed down against the PCB land or other mating surface during th

Crazy glue will not withstand soldering temperature. When heated to soldering temperature, it gives off vapors that probably are not good to breath. IPC-SM-817A address adhesives for SM parts. This do

Those are called Mod-pots, for modular pots. At one time you could get a kit to assemble these as you needed, for prototyping and repair. Now the kits are no longer available and the pots are assemble

My take on this after replacing thousands of surface mount electrolytic capacitors is replace them all when you get a new to you device that is more than ten or so years old. Switchers are harder on e

Ensure that the silicon sealer does NOT cure with acetic acid. Use silicone sealer that cures with alcohol. If it smells like vinegar do not use it on electronics. Glenn

Is a 7D01 of any value or just good as a source of parts for other plugins? Glenn -- ----------------------------------------------------------------------- Glenn Little ARRL Technical Specialist QCWA

How many do you need? Glenn