"Check if the speaker is off center with regard to the baffle hole. And any thing loose in the cabinet. "
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Scott Rhode's Discussions
Philharmonic XXX IF alignment
Started this discussion. Last reply by David C. Poland Jun 10, 2021. 5 Replies 0 Likes
Hello All,I'm seeking some help with the IF alignment of this set. This is the first Scott I've restored. It is super clean and all original. I've read every post on the topic of Philharmonic XXX…Continue
Philharmonic B+ voltage divider
Started this discussion. Last reply by David C. Poland May 11, 2021. 6 Replies 0 Likes
Hello,This is my first post on the forum. I am restoring my first EH Scott, the 8-knob Philharmonic. There is an open section on the B+ divider, the divider itself is stamped "523". In reading a…Continue
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"The capacitor between the selectivity switch and the AVC was the problem. Thank you for pointing that out. IF, diodes and RF alignment completed.
I will tackle the expander adjustment tomorrow. It definitely improves orchestral pieces, the…"
"Some versions of the Philharmonic had a capacitor between the AVC signal and the selectivity control. If your set is one of those versions, you will need to move the meter to the AVC side of the capacitor instead of the selectivity control…"
"Yes, I replaced the caps in the RF, IF and Audio diodes and circuit traced the coils and connections. Everything checks out."
"That is about where the IF diode assembly is located electrically. Did you replace the 3 caps inside the IF diode assembly ? an .05 and a pair of .005's as I recall. Check that the resister leads are intact too (not broken).
Is a pain to…"
Philharmonic XXX IF alignment
Hello All,I'm seeking some help with the IF alignment of this set. This is the first Scott I've restored. It is super clean and all original. I've read every post on the topic of Philharmonic XXX alignment. I have the technical service data .pf and the Philharmonic simplified alignment document put together by Norman Braithwaite (very helpful) but I am not getting the results expected.After replacing all the wax and electrolytic caps and out of spec resistors the radio worked everywhere except…See More
"Hi,
I'll post pics once I finish the restore. The serial number is KK-25.
I finished the recapping and installed a new B+ divider on the advice of a prior posting. I'm waiting for some tubes to arrive before I can…"
"Can you post a pic or serial number? What would you like to know?"
"Suggest you attach a photo of the receiver. Use the "paper clip" icon in this heading."
"Don't really know what you mean by "This set has 8 controls but does not have an unused chassis hole" You have a dial pointer version based on your early serial number. I normally call them "7 knob"…"
"Scott and David,
Thank you for your advice and information. I will replace the whole candohm.
This set has 8 controls but does not have an unused chassis hole.
I'm sure that I'll be back with more questions once I'm…"
"FYI - The Philharmonic is referred to as a 30 tube set, including the two eye tubes. The FM Philharmonic is a 33 tube radio. Both tube counts include the 6 tube power supply."
"I agree. Replace the whole B+ divider for sake of reliability.
I have a pointer dial KK-237 with a 1938 date on a part inside. If yours is 8 knobs (plus tuning), I suspect yours was returned to the Scott Lab for repair and was up dated. Your would…"
"I strongly recommend replacing the whole candohm resistor with a new Ohmite D50K5K0E resistor. It is 5k and 50 watts. Purchase a couple of Ohmite 2121E taps, and a Ohmite 7PS50E mount. The other candohm resistor…"
Philharmonic B+ voltage divider
Hello,This is my first post on the forum. I am restoring my first EH Scott, the 8-knob Philharmonic. There is an open section on the B+ divider, the divider itself is stamped "523". In reading a previous thread someone said that there were two versions of this divider with the difference being that the 1200 ohm 250 VDC section was increased to 1700 ohms on later models. Of course this is the section that is open on this radio. How can I determine which resistance I should use in replacing…See More
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