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48-1262
#9

Well, I'm stumped, and I hope that someone can tell me if I am missing something.

Voltage in Section 1:

Test point A - 126 (should be 167)
Test point B - 204, but dropped to 178 (should be 214)
Test point C - 90 (should be 181)

Electrolytics are new with correct values and properly wired.

Section 4 Oscillator Test

+3.8 and then dropped off. Can't figure why it isn't negative.
Coil ohms at 3.0

Section 4 Voltage Check of 14AF7

Pin 3 111
Pin 6 125 (then dropped to 107)
Pin 7 2.6 (should be 4.2)

I replaced C405 with no change.

Last item: How do I perform a audio transformer check? I hear scratching in the speaker but no sound except a hum when I turn the volume up. No audio whatsoever.

Terry


Messages In This Thread
48-1262 - by ke5yum - 10-08-2013, 01:14 PM
RE: 48-1262 - by klondike98 - 10-08-2013, 04:05 PM
RE: 48-1262 - by BrendaAnnD - 10-08-2013, 04:09 PM
RE: 48-1262 - by ke5yum - 10-09-2013, 07:42 AM
RE: 48-1262 - by ke5yum - 10-22-2013, 07:56 AM
RE: 48-1262 - by Radioroslyn - 10-22-2013, 06:05 PM
RE: 48-1262 - by Radioroslyn - 10-22-2013, 06:48 PM
RE: 48-1262 - by ke5yum - 10-23-2013, 08:05 AM
RE: 48-1262 - by ke5yum - 10-30-2013, 07:57 AM
RE: 48-1262 - by Radioroslyn - 10-30-2013, 08:15 PM
RE: 48-1262 - by ke5yum - 10-31-2013, 08:02 AM
RE: 48-1262 - by Radioroslyn - 10-31-2013, 04:53 PM
RE: 48-1262 - by ke5yum - 11-01-2013, 07:50 AM
RE: 48-1262 - by ke5yum - 12-13-2013, 09:16 AM
RE: 48-1262 - by Radioroslyn - 12-15-2013, 01:08 PM
RE: 48-1262 - by ke5yum - 12-18-2013, 09:37 AM
RE: 48-1262 - by klondike98 - 12-18-2013, 10:03 AM



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