Galaxy 88 Freq counter won't come on

[Renegado]

Hi u Gays!!! just made a boo-boo on this radio, Galaxy 88, well i shorted out the wire the goes to the on/off switch of the frq counter, from the main on/off power button, radio works perfectly, but the freq counter won't come on, can anyone tell me what bad part or parts should i look for??? and where?? thx.

[Rick]

What is the frequency counter board number? As there 2 types used on the DX88HL.

[Renegado]

Hi Rick!! My Freq counter board # is the EPT210014C

[Rick]

Check the voltage at the input and output of the voltage regulator IC8 Pin 1 and 3, also check the voltage at the Emitter?s of Q1 and Q2. Let us know what voltages you have.

[Renegado]

IC 8 = Input 0, Output 0
Q2 = E 0, C 0 and B 0, then i saw a resistor kind of friedthen i just touched it, it was hot as , and re tested again as follows: IC8=Input 8V, Output 5V, Q2= E 4.8 C 2.5 B 5V Q1= E 4.8V C 2.1 B 5 V, then i touched the fried resistor and broke loose, i beleive is the R 37, so if it is i will need the value, can u give ur opinion on this???

[Rick]

Where is the resistor soldered from and to? I ask this has R37 would not stop you counter from working.

[Renegado]

R 37 is soldered between the +13V and the Voltage input, of the IC 8 , this resistor stops the freq counter from working, without this resistor power won't reach the input of IC 8

[Rick]

Ok I see the R on your diagram. The diagram I have does not show that R it show a Choke in the R37 position this maybe a revision change. Any way the R is 47 Ohms 1/8 or 1/4 Watt should do the job. This R will run warm in normal use. If it is running very hot try un-soldering the output of the voltage reg Pin 3.

[Renegado]

Well Mike, i just don't have this type of Resistor ( chip resistor ) at the present moment, to replace the fried one, i'll get with you to show u the results, and thanks again for everything u do for all of us.

[The Defpom]

Replace it with a standard 1/4 watts type, it will probably stop it getting hot (too much current draw) and will work just fine, just be careful when soldering it in on those tiny traces, you wont need much heat.

[Renegado]

Ok, i got plenty of those, thank you for ur advise.

[Renegado]

My Galaxy 88 freq counter, is working real good, the whole radio is in fact, thank you Mike and Mr. Defpom for his contribution, once again, next project is to install 2 noise toys.