PRO 97 Help
- Thread starter earnan
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trunker0205
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Did the description say it was fully functional ?
If it did contact the seller and tell him you want to return it
If the item description says powers up but untested beyond that point sorry to say your on your own..You can bring it to a radio shack they can send it out for repair but it will probably cost $50-75 to fix..Im not familiar with MH you speak of but i have bought several pro-97's off ebay with the understanding some may work and some might not..
If it did contact the seller and tell him you want to return it
If the item description says powers up but untested beyond that point sorry to say your on your own..You can bring it to a radio shack they can send it out for repair but it will probably cost $50-75 to fix..Im not familiar with MH you speak of but i have bought several pro-97's off ebay with the understanding some may work and some might not..
trunker0205
Member
I have bought 10 off Ebay 8 worked and 2 didnt, they power up scan program but no sound and no signal but the cases are cosmetically perfect so i will wait for one that is functional but banged up and swith cases..
trunker0205
Member
I have 2 that does the same thing maybe some of the techs here may have an idea what could be wrong...Symptoms are scanner is fully functional but no sound or signal,squelch will not open but beeps sounds and display everything works..
Broken PRO-97
I've bought several scanners from eBay, 1 PRO-97. Most have had some problems.
I will give him a call soon and take a look at what is going on.
George
I've bought several scanners from eBay, 1 PRO-97. Most have had some problems.
I will give him a call soon and take a look at what is going on.
George
Thinking about it this sounds like the bad squelch potentiometer problem that seems to quite common with the Pro-97. There is lots of information about it on the Yahoo Pro-97 group
http://groups.yahoo.com/group/Pro-97/
http://groups.yahoo.com/group/Pro-97/
I agree with n2mdk
I met with Scott (earnan) and checked out his scanner visually. The audio section of the scanner works fine. The CPU is not detecting a signal present. I looked at the schematic myself, and while there are a lot of things it could be, I would agree with n2mdk that the SQUELCH pot is the most likely culprit. I sure do wish for many reasons that GRE did not use this stupid stacked dual pot on this model. I guess all I can hope is that they do not use this type of pot on their own branded models.
The volume pot is 50K with a switch. The squelch pot is 10K. I don't have an exact part number available, nor do I know if this is an "orderable" part from RS.
Edit: Here is some info from the PRO97 Yahoo Group:
They are made by an obscure Taiwan company called Hung Ta Enterprises,
part number RG82BS-2A1. See http://www.hung-ta.com.tw/03-list-02.htm#.
Mouser does not carry them and the only place I know of is Radio Shack.
Their part number is 12429163. Note that it is a dual control - you
will be buying the volume pot, squelch pot and on/off switch in one
assembly. The price should be just under $16.
Here are some pics for replacing the part:
http://ph.groups.yahoo.com/group/Pro-97/photos/browse/64da
Good luck Scott.
Nice to meet you.
If you can find a part, I'll be happy to replace the old one for you.
I met with Scott (earnan) and checked out his scanner visually. The audio section of the scanner works fine. The CPU is not detecting a signal present. I looked at the schematic myself, and while there are a lot of things it could be, I would agree with n2mdk that the SQUELCH pot is the most likely culprit. I sure do wish for many reasons that GRE did not use this stupid stacked dual pot on this model. I guess all I can hope is that they do not use this type of pot on their own branded models.
The volume pot is 50K with a switch. The squelch pot is 10K. I don't have an exact part number available, nor do I know if this is an "orderable" part from RS.
Edit: Here is some info from the PRO97 Yahoo Group:
They are made by an obscure Taiwan company called Hung Ta Enterprises,
part number RG82BS-2A1. See http://www.hung-ta.com.tw/03-list-02.htm#.
Mouser does not carry them and the only place I know of is Radio Shack.
Their part number is 12429163. Note that it is a dual control - you
will be buying the volume pot, squelch pot and on/off switch in one
assembly. The price should be just under $16.
Here are some pics for replacing the part:
http://ph.groups.yahoo.com/group/Pro-97/photos/browse/64da
Good luck Scott.
Nice to meet you.
If you can find a part, I'll be happy to replace the old one for you.
Last edited:
trunker0205
Member
gmclam said:
Interesting assesment,im no tech but evn if it was the squelch pot wouldn't the scanner be able to detect a strong signal ?
Broken PRO-97
2. No
3. Check out the PRO-97 Yahoo group - link posted above. This is a documented problem which shows the exact same symptoms.
4. As I stated, there are a lot of things it CAN be. But they're not logical failures.
1. I am a tech (and more).trunker0205 said:
2. No
3. Check out the PRO-97 Yahoo group - link posted above. This is a documented problem which shows the exact same symptoms.
4. As I stated, there are a lot of things it CAN be. But they're not logical failures.
trunker0205
Member
Where did you get the pot to replace,I saw the link but there were several ones to choose from..I would like to try it can you tell me what pot you used and where i can get it..Thanks
It sure sounds like you got a defective scanner, and if that's the case, it doesn't make much difference what's wrong with it, because it isn't likely you will be able to repair it yourself anyway.
You've got two choices: Send it back to Radio Shack for repair, and get back a working scanner, or try to get a refund from the eBay seller. I would opt for the first option.
You've got two choices: Send it back to Radio Shack for repair, and get back a working scanner, or try to get a refund from the eBay seller. I would opt for the first option.
JESSERABBIT
Member
Broken, loose speaker wire? Foreign object in external speaker jack?
Limited suggestions
The speaker works fine. When you press a button you hear the beep. That also means the amplifier works. Keep in mind the scanner only scans, and never stops. If a signal is ever received, the CPU does not know it and keeps on scanning.
I just have to admire all you "armchair quarterbacks" out there.JESSERABBIT said:
The speaker works fine. When you press a button you hear the beep. That also means the amplifier works. Keep in mind the scanner only scans, and never stops. If a signal is ever received, the CPU does not know it and keeps on scanning.
Wow, that's a very presumptive statement. There are quite a few of us here on RR very capable of fixing these things. Some of us might even do a better job of building them in the first place.W4kRR said:
Again short sighted. Sources show a replacement pot costs under $17. I am willing to change it out for free for him. Also, he just happens to work at an electronics store (no NOT RS) and he just might be able to find a replacement; perhaps even better quality or at a lower price.
gmclam said:
You are no doubt correct in that there are people here are capable of fixing defective scanners, but I gathered from the OP and his question that he wasn't one of them. I figured if you have to ask what the problem might be, then fixing it is probably beyond your means. Yes, I could absolutely be wrong, but I would bet not. But that's just my guess.
And how do you know the problem is the pot? Have you examined the radio?
thank you gmclam for taking a look at my scanner. my boss took it and said he would be able to just get me a new scanner. he said there was a bad batch of the 97 in the sacramento area about a lot of 500 or so. and if you mutiply that by the amount of RS in each major city not including the one horse towns thats alot of bad scanners. he has encountered the problem many times. Heck he even warned me before i bought the scanner about buying on ebay. thank you all for the suggestions.
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