开云体育

[IC-7000] (Almost) Dead IC-7000

[email protected] #34970 开云体育 Yes, it is a classic failure : (use Google translate) => Change C501 and C502 (even if one still works) => R2011 is HS so change it (4R7 on the 8V) Use soldering iron? RoHs compliant ... Could you give me the serial number of your tranceiver, how old is it ? (for stats) Best regards, Ludovic Vuillermet - F5PBG toggle quoted message Show quoted text I have a 7k with the?“click-click no power” problem. ? I’ve found a good start about it here: Tested for the C501 and C502 in the main panel board and I can say one of them is really shorted. ? Does anybody have or had this problem in the past, and was able to solve it? ? I’ll try to fix it myself, but I have some doubts about how to remove the main board. Can someone give me some tips on how to remove it, especially concerning to the flat cables? ? I have no Icom Maintenance around, so I’ll have to put my on hands into the game, so, any additional information will be welcomed. ? Thanks, in advance. 73 from Brazil.
Edson Rocha All Messages By This Member #34971 >>=> R2011 is HS so change it (4R7 on the 8V) What HS means? I've read over the net cases where this resistor remains intact. I'll begin with the capacitors. ? I guess I have some 100uF tantalum DIP capacitors around. ? >>>Could you give me the serial number of your tranceiver, how old is it ? (for stats) Not available right now, because I'm away from?from home. The radio is 3 years old, but it was stored in its original package?since I brought it from Lisbon-PT. No more than 2 hours of use. ? Em Sexta-feira, 13 de Dezembro de 2013 7:31, "ludoradio@..." <ludoradio@...> escreveu: ? Yes, it is a classic failure : (use Google translate) => Change C501 and C502 (even if one still works) => R2011 is HS so change it (4R7 on the 8V) Use soldering iron? RoHs compliant ... Could you give me the serial number of your tranceiver, how old is it ? (for stats) Best regards, Ludovic Vuillermet - F5PBG toggle quoted message Show quoted text I have a 7k with the?“click-click no power” problem. ? I’ve found a good start about it here: Tested for the C501 and C502 in the main panel board and I can say one of them is really shorted. ? Does anybody have or had this problem in the past, and was able to solve it? ? I’ll try to fix it myself, but I have some doubts about how to remove the main board. Can someone give me some tips on how to remove it, especially concerning to the flat cables? ? I have no Icom Maintenance around, so I’ll have to put my on hands into the game, so, any additional information will be welcomed. ? Thanks, in advance. 73 from Brazil.
Steve W3AHL All Messages By This Member #34972 I don't know what HS stands for, but I assume the resistor was discolored due to overheating. I wouldn't recommend using the DIP leaded caps, as you will probably end up ruining the circuit board traces. ?Remove the existing caps from the circuit to see if that clears the short, or if there are other problems. ?It is OK to power up the radio without the C501 & C502 caps for testing, since they only decouple noise on the 5VDC power bus. ?But the display circuits may be a little "glitchy" until good caps are installed. Then order the correct parts and install them. ? Steve, W3AHL
Roger Brookes All Messages By This Member #34975 开云体育 Hi, ? HS may refer to HS Electronic Ltd, a major supplier of SMD and other reeled components in China. ? Roger, G4PUM ? toggle quoted message Show quoted text From: ic7000@... [mailto:ic7000@...] On Behalf Of w3ahl@... Sent: 14 December 2013 04:50 To: ic7000@... Subject: Re: [IC-7000] (Almost) Dead IC-7000 ? ? I don't know what HS stands for, but I assume the resistor was discolored due to overheating. ? I wouldn't recommend using the DIP leaded caps, as you will probably end up ruining the circuit board traces. ?Remove the existing caps from the circuit to see if that clears the short, or if there are other problems. ?It is OK to power up the radio without the C501 & C502 caps for testing, since they only decouple noise on the 5VDC power bus. ?But the display circuits may be a little "glitchy" until good caps are installed. ? Then order the correct parts and install them. ? ? Steve, W3AHL
[email protected] #34977 开云体育 >>=> R2011 is HS so change it (4R7 on the 8V) What HS means? Sorry... HS means "hors service" in french... That is to say R2011 is dead... Best regards, Ludovic - F5PBG.
Edson Rocha All Messages By This Member #34981 Good news: Only C501 was shorted. No other damaged parts. ? Just removed it, and the radio came back from the dead. ? The sad part is I can’t find a suitable replacement for a while. ? ? ------------------------------------- ? Edson Rocha, PU2REO ? eirocha@... ------------------------------------- ? De:?ludoradio@... Enviado:??14? de ?dezembro? de ?2013 ?10?:?58 Para:?ic7000@... Assunto:?Re: [IC-7000] (Almost) Dead IC-7000 ? ? >>=> R2011 is HS so change it (4R7 on the 8V) What HS means? Sorry... HS means "hors service" in french... That is to say R2011 is dead... Best regards, Ludovic - F5PBG. ?
[email protected] #34984 Le 14/12/2013 20:28, eirocha@... a écrit : Good news: Only C501 was shorted. No other damaged parts. Just removed it, and the radio came back from the dead. The sad part is I can’t find a suitable replacement for a while. Very strange : You have the 8V regulator, then R2011 and C501//C502 ... So you can find suitable replacement on eBay with words like : 100?F SMD Best regards, Ludovic - F5PBG.

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