If you can power it up then down again and the S-meter slams to the right, it's the first production run and may have a number more problems than later runs where factory assembly defects were corrected.
Based on the serial number you can tell the year of manufacture. It is the first digit of the SN that is the year of manufacture. If the SN is 6xxxxx then it was made in I have a unit with the serial number which makes it a production year which is still part of the first production run as its S-meter slams to the right when powered off.
It also seems to exhibit many of the known issues that are well known for this model. Also look into upgrading the power supply cooling arrangement. Citation from N8YX. The power supply fan operates on 12VDC. Sometimes when the OEM fan tests good on external power, it could be that under load the fan is not getting sufficient voltage from inside the unit.
Under load it has been reported that the voltage measured on a meter dropps from 17v down to 3v. This relates to a problem with the AVR board. Modern computer fans can serve as excellent replacements in the fan is bad.
Readjustment of the PLL unit will correct this tendency. On the bottom right of the LCD Board there is a black plastic momentary switch. I just puched it once and it reset all the LCD parameters. VFO display, Clock, etc. Unit shows very slight scratches due to normal wear. This radio has the antenna tuner installed. This tranceiver has been aligned and all 3 memory batteries have just been replaced. Comes with 5 foot power cord. Tested on all bands thru a dummy load and also tested on 40 and 75 meters — great reports on both!
If you have good eyes, fine. If you need optical help, best to put on some kind of magnifier. I bought some 2. I don't suggest heating the wax, since all that does is make it gooey and it tends to flow into worse places. I also thought about a solvent, like acetone, but decided to use that if I have to go back in there.
Results: The radio has been playing for about 4 hours. The shack is warm, about 80 degrees and the humidity is pretty high - high enough to be a bit uncomfortable. It's July 29th in Connecticut. So far - so good. If this thing survives tonight's CQ's and works for a few weeks without sneezing, then I'll report back. If it quits again, I'll also report back, but be warned; I may use some words I learned in the Army.
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