Counter in DX66V is Dead

This forum is intended for asking any other technical questions that you cannot find answers to in the other forums.
Post Reply
User avatar
Butterbean

Counter in DX66V is Dead

#71505

Post by Butterbean »

No frequency counter, or channel display. I know the freq counter isn't bad. I pulled it out and installed it in an old 55v and it works great. I know it has to be something simple. Any help will be greatly appreciated.
User avatar
Duck Commander

#71511

Post by Duck Commander »

Try the NB switch i no on my 99V if you have it turned all the way 1 way the freq dont wont flip it the other way and see what you get
User avatar
Butterbean

#71514

Post by Butterbean »

nope that isn't it. i've already checked it. lol. i'm in the process of tracing now. hopefully i can find it. thanks anyway duck
User avatar
Duck Commander

#71515

Post by Duck Commander »

10-Fo sorry i dont have a clue then what it could be
User avatar
mopar2ya
Skipshooter
Skipshooter
Posts: 408
Joined: February 4th, 2007, 1:52 pm

#71526

Post by mopar2ya »

Is the radio operating normally other than the display being off?
Is the meter light off as well?
Does the red transmit light work?

If the answer to all of those questions is yes, I would assume it is the dimmer or something connected to it. Make sure a wire hasn't broken off the back of that pot. Check to make sure the dimmer isn't off.

Mopar

wan•na•boo (wah-nah-boo) Informal n. Derived of wan-na-bee 1. One who aspires to be a Peakaboo. 2. One who imitates the behavior, customs, or dress of a Peakaboo. 3. A product designed to imitate the qualities or characteristics of something built by a Peakaboo.
User avatar
Butterbean

#71569

Post by Butterbean »

The meter light is the only thing working. No key-up, TX light, etc. I'm lost on this one.
User avatar
mopar2ya
Skipshooter
Skipshooter
Posts: 408
Joined: February 4th, 2007, 1:52 pm

#71859

Post by mopar2ya »

Your posts are very cryptic.

Your first post led me to believe that the only problem with the radio was the channel and frequency display.

Your second post says "The meter light is the only thing working. No key-up, TX light, etc. I'm lost on this one."

Does this mean the meter light is the only one of the lights working?
Or, do you mean the meter light is the only thing on the radio working?

What is no key-up? Does this mean the red light isn't working?
Or, do you mean the radio won't key up.

I guess I am lost too.

I am going to guess the -only- thing working on this radio is the meter light??
If that is the case, I would guess that TR51 is shot.
TR51 is a 2SB754, an 8 volt voltage regulator, also called the AM Modulation amp. An alternate part is a 2SB817. Which one is the better part has been quite a debated subject. Either part will work.

Try and be more specific if my guesses are wrong. Say -exactly- what the radio will and won't do, and in what modes AM/FM, TX/RX it will and won't do those things in.

Mopar

wan•na•boo (wah-nah-boo) Informal n. Derived of wan-na-bee 1. One who aspires to be a
Peakaboo. 2. One who imitates the behavior, customs, or dress of a Peakaboo. 3. A product
designed to imitate the qualities or characteristics of something built by a Peakaboo.
-.. --- -. - / ..-. --- .-. --. . - / - --- / -.. .-. .. -. -.- / -.-- --- ..- .-. / --- ...- .- .-.. - .. -. . / .-.-.- / .-.-.
User avatar
Butterbean

#71983

Post by Butterbean »

Sorry mopar. I was in a hurry. THE ONLY THING on the radio that's working is the meter light in RX. Doesn't change when keyed. No freq counter or channel display. I will try replacing TR51 and let you know the results. Many thanks
User avatar
Butterbean

#72000

Post by Butterbean »

ok. i replaced TR51. Now I have RX, TX, and a channel display. Still no freq display.
User avatar
mopar2ya
Skipshooter
Skipshooter
Posts: 408
Joined: February 4th, 2007, 1:52 pm

#72134

Post by mopar2ya »

I hate to ask this, but I am going to ask anyway.... And only because it is something I would do.

Are you sure the frequency display isn't just turned off?

Mopar

wan•na•boo (wah-nah-boo) Informal n. Derived of wan-na-bee 1. One who aspires to be a
Peakaboo. 2. One who imitates the behavior, customs, or dress of a Peakaboo. 3. A product
designed to imitate the qualities or characteristics of something built by a Peakaboo.
-.. --- -. - / ..-. --- .-. --. . - / - --- / -.. .-. .. -. -.- / -.-- --- ..- .-. / --- ...- .- .-.. - .. -. . / .-.-.- / .-.-.
User avatar
Butterbean

#72229

Post by Butterbean »

LOL. That sounds like me too. It's turned on. I'm still tracing it.
User avatar
Butterbean

#73234

Post by Butterbean »

Ok. Here's what i have so far. Counter displays 27.888 mhz on RX. Digits are extremely bright. When I key the mic, the digits dim to normal brightness and read 27.185 as they should. Dimmer only works on freq counter when mic is keyed. Dimmer works on channel display and meter light as normal in both rx and tx. RX is a little noisier than normal. RF gain cuts out the white noise as it should, but leaves a faint hum.
Post Reply