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Thanks LC. Thats pretty accurate. I hope to start working on the radio after the holidays. Is there anyone in the Houston area that would like to do the work on this radio for a trade on my 148 and some cash ? I would consider that as this will save me lots of time. Just the recap is going to...

10-4. Looks like I have enough documentation. A counter and some time and I will be off and running. Are there any members that work on this chassis in the Houston area? Thanks 435

Downloaded the service manual for the trc449 with the parts list. I looked through this thread and did not see a Sams link for the service manual. Holydvr said he has a paper copy. Is it worth getting the Sams service manual or is the Tandy Corp good enough ?

I screwed up on my last post. The link the Lkaskel posted from CB tricks is dead. Is there any other way to get that document ?

I swapped the 10.240 crystal with the 148 and no change. Later tonight I will download all service related manuals, locate and order a frequency counter and start looking around. I have not placed the radio in the PA mode which will require some rewiring. I may have indicated earlier that I...

I have a long day today but will see if I can pull out the 138 and the 148 to see what I need to do later tonight. Sunday will be mostly accounted for also. Either way it looks like I may get some answers doing the crystal swap. Thanks for all the help. I will order the mic adapter and a couple...

Sounds good. Would it be better to put the 138 crystal in the 148 or the other way around? I dont want to cause any more problems if it can be avoided. I dont have a 5 pin mic for the 148 and I think that unit may need a mic plugged in to receive. I cannot remember. I could pick up a 5 pin...

Does the 148GTL use the same crystal ? I have a stock 148 with me that I purchased out on the road for cheap and it works. The guy I bought it from wouldn't sell me the 5 pin microphone he had when I tested it as he was short on microphones so I do not have a microphone as the 138 is a 4 pin and...

Thanks. I cannot compare any of the voltages I posted as I do not have the service manual or any other reference other than what members are telling me here. You are the first to imply that there are voltage problems and I was hoping to get some feedback so I thank you for that. I listen to...

The radio quit in the middle 90s maybe early 90s so under 20 years of sporadic use. After some reading, I suspect that the caps are up for replacement but it seems unlikely to be the root of the problem but possible and I guess I could find new problems if I do not replace the caps but fix the...

Agree with the recap. I would like to solve the problem or at least identify the problem before a recap of the radio. This would be easier for me to do everything all at once and be done with it as I do not have proper facilities to work on the radio. I am out on the road in a motorhome setting...

Installed the new C179 cap today and all is fine no chattering no problem and seems to be back to the original problem. The relay is working fine. I followed up on that low voltage reading in the TX mode on IC6 by checking the voltage coming into the radio at the power plug. 13.42 volts in RX...

I will perform all those checks. I do believe that in the case of transmit that all is completely dead. I have used my meter with a dumby load that does swr, modulation and power. No meter movement on any meter on side band or am. The meter is good I used it to install my 29ltd in the motorhome...

Thanks. That looks perfect. Good price too. Probably will not be using it much past my 138xlr. I will do a search for probes and hopefully get that ordered tonight. I did pick up the 2.2uf caps yesterday. I will probably have time later in the day to get that intalled then will hopefully get...

I will be picking up the cap on Friday if everything goes as planned. The electronics store does not seem to have any freq counter options based on the website but I will know better when I get there on Friday

I did get to the electronics store yesterday but they close at 12pm so another day passes without the cap. Cannot make it today so it will be either tomorrow or Friday. That cap failure must have been a coincidence. Do you have any suggestion for a counter and probes ? I would prefer to get...

Unfortunately, my feq counter from long ago was loaned and never returned so I guess I will need to look for another. Was not able to get to the electronics store yesterday for the 2.2uf but will try today. I suspect a new freq counter is a week or so away so anything that could help without...

If the crystal went dead, would that cause no power output on transmit ?

Thanks. I guess for now I will just go with the elecrolytic as it is in stock close by and I need to get that in so LC can continue his guidance to fix the main problem which is no power on transmit and no receive. I may get that kit from KM and have him include the tantalum cap but first I will...