<div dir="ltr"><div dir="ltr">There are a lot of parts that will work there. As previously mentioned it's a 1 amp 5 volt regulator in a TO220 case. (TO220 is the case style with three pins and a heat sink tab with hole for a bolt to attach it to something metal to keep it cool)<div><br></div><div>Extremely common and extremely cheap part. Makes nice clean 5V from any input voltage from about 6V to about 35V. Three pins are just "input voltage 6V-35V", "output voltage 5V", and ground.</div><div><br></div><div>Digikey for that voltage and case shows the ubiquitous 7805 as well as compatible variations up to 5A:</div><div><br></div><div><a href="https://www.digikey.com/products/en/integrated-circuits-ics/pmic-voltage-regulators-linear/699?k=&pkeyword=7805&sv=0&pv1779=56&sf=0&FV=40203a%2Cffe002bb&quantity=&ColumnSort=0&page=1&stock=1&pageSize=25">https://www.digikey.com/products/en/integrated-circuits-ics/pmic-voltage-regulators-linear/699?k=&pkeyword=7805&sv=0&pv1779=56&sf=0&FV=40203a%2Cffe002bb&quantity=&ColumnSort=0&page=1&stock=1&pageSize=25</a><br></div><div><br></div><div>Any part designated 7805-anything should work.</div><div><br></div><div>It likely blew up because something else shorted, but if the shorting was temporary then it might just need replacing.</div><div><br>Suggestion: Buy a few because they are much cheaper than postage will be, about 50 cents each at Digikey in quantity <10. Solder in a new one and see if it works or blows up again.</div><div><br></div><div>If it blows up again, look for shorts around the device and fix those before blowing up another one.<br><br>Repeat until it's working or you lose interest.</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Feb 23, 2019 at 11:01 AM Battmain via Shop-talk <<a href="mailto:shop-talk@autox.team.net">shop-talk@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class="gmail-m_-5809008202927118149ydp65bf8037yahoo-style-wrap" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px"><div></div>
<div>Could I use *any* MC7805CT as a replacement, as the first link shows different models of that regulator? Some models of the regulator have variable output as listed in the second link. I suspect the output should stay constant for power, but since the amp output section has the pot on it, was wondering if I should go with the adjustable output regulator or just stick with a fixed output?</div><div><br></div><div><br></div><div>Brian</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div>
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On Saturday, February 23, 2019, 9:37:17 AM EST, Pat Horne <<a href="mailto:patintexas@icloud.com" target="_blank">patintexas@icloud.com</a>> wrote:
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<div><div id="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354"><div>This chip is a voltage regulator, not the audio amplifier. The part number indicates that it is a 5v fixed regulator. <div><br clear="none"></div><div>Peace, </div><div>Pat<br clear="none"><br clear="none"><div dir="ltr" id="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354AppleMailSignature">Pat Horne <div>We support Habitat for Humanity</div><div><br clear="none"></div></div><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354yqt0494001998" id="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354yqt20296"><div dir="ltr"><br clear="none">On Feb 23, 2019, at 7:35 AM, Battmain via Shop-talk <<a shape="rect" href="mailto:shop-talk@autox.team.net" rel="nofollow" target="_blank">shop-talk@autox.team.net</a>> wrote:<br clear="none"><br clear="none"></div><div dir="ltr"><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp2bbfaeyahoo-style-wrap" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px"><div></div>
<div>I did look up that model, however, here is an example from this site...</div><div><a shape="rect" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354enhancr_card_1328980195" href="http://www.alldatasheet.com/view.jsp?Searchword=MC7805CT" rel="nofollow" target="_blank">MC7805CT Datasheet, PDF - Alldatasheet</a><br clear="none"></div><div><br clear="none"></div><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-link-enhancr-card gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebymail-preserve-class gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebymail-preserve-style" id="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebenhancr_card_1328980195" style="max-width:400px;font-family:"Helvetica Neue","Segoe UI",Helvetica,Arial,sans-serif"><a shape="rect" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-enhancr-cardlink" href="http://www.alldatasheet.com/view.jsp?Searchword=MC7805CT" style="text-decoration:none;color:rgb(0,0,0)" rel="nofollow" target="_blank"><table class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-wrapper gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" style="max-width:400px"><tbody><tr><td colspan="1" rowspan="1" width="400"><table class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224,228,233);border-radius:2px"><tbody><tr><td colspan="1" rowspan="1" valign="top" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-primary-image-cell" bgcolor="#000000" height="175" style="background-color:rgb(0,0,0);background-size:cover;border-radius:2px 2px 0px 0px;min-height:175px"><table class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-overlay-container-table gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" style="width:100%"><tbody><tr><td colspan="1" rowspan="1" valign="top" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-overlay-cell" bgcolor="transparent" style="background-color:transparent;border-radius:2px 2px 0px 0px;min-height:175px"><table class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-ignore-table" border="0" height="175" style="width:100%;min-height:175px"><tbody><tr><td colspan="1" rowspan="1" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-richInfo2" style="text-align:left;padding:15px 0px 0px 15px;vertical-align:top"></td><td colspan="1" rowspan="1" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-actions" style="text-align:right;padding:15px 15px 0px 0px;vertical-align:top"><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-share-container"></div></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td colspan="1" rowspan="1"><table align="center" class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-info gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" style="background:rgb(255,255,255);width:100%;max-width:400px;border-radius:0px 0px 2px 2px;border-top:1px solid rgb(224,228,233)"><tbody><tr><td colspan="1" rowspan="1" style="background-color:rgb(255,255,255);padding:16px 0px 16px 12px;vertical-align:top;border-radius:0px 0px 0px 2px"></td><td colspan="1" rowspan="1" style="vertical-align:middle;padding:12px 24px 16px 12px;width:99%;font-family:"Helvetica Neue","Segoe UI",Helvetica,Arial,sans-serif;border-radius:0px 0px 2px"><h2 class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-title" style="font-size:14px;line-height:19px;margin:0px 0px 6px;font-family:"Helvetica Neue","Segoe UI",Helvetica,Arial,sans-serif;color:rgb(38,40,42)">MC7805CT Datasheet, PDF - Alldatasheet</h2><p class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-richinfo-primary" style="font-size:12px;line-height:16px;margin:0px 0px 4px;color:rgb(151,155,167)">alldatasheet.com</p><p class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydp3e0f82ebcard-description" style="font-size:12px;line-height:16px;margin:0px;color:rgb(151,155,167)">MC7805CT Datasheet, MC7805CT PDF, MC7805CT Data sheet, MC7805CT manual, MC7805CT pdf, MC7805CT, datenblatt, Elec...</p></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></a><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354loadingSpinnerContainer" style="width:100%;min-height:100%"><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354D_F gmail-m_-5809008202927118149ydp4db1db92yiv6690341354F_n gmail-m_-5809008202927118149ydp4db1db92yiv6690341354gl_C gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ab_C gmail-m_-5809008202927118149ydp4db1db92yiv6690341354H_6MGW gmail-m_-5809008202927118149ydp4db1db92yiv6690341354o_h"><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354W_6MGW gmail-m_-5809008202927118149ydp4db1db92yiv6690341354H_6MGW gmail-m_-5809008202927118149ydp4db1db92yiv6690341354D_X gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ah_1PEzoz"></div></div></div></div><div><br clear="none"></div><div><br clear="none"></div><div>They list multiple models of that chip. The one I think is closest is...</div><div><a shape="rect" href="http://pdf1.alldatasheet.com/datasheet-pdf/view/82852/FAIRCHILD/MC7805CT.html" rel="nofollow" target="_blank">http://pdf1.alldatasheet.com/datasheet-pdf/view/82852/FAIRCHILD/MC7805CT.html</a><br clear="none"></div><div>because of the variable output. The amp does have level/volume pot on it. The other datasheets in the list do not show a variable output.</div><div><br clear="none"></div><div>Brian</div><div><br clear="none"></div><div><br clear="none"></div>
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On Saturday, February 23, 2019, 6:30:21 AM EST, Jeff Scarbrough <<a shape="rect" href="mailto:fishplate@gmail.com" rel="nofollow" target="_blank">fishplate@gmail.com</a>> wrote:
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<div><div dir="ltr">How about LM7805CT?<br clear="none"><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydpbf13efe9yqt8133710530" id="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydpbf13efe9yqtfd96835"><br clear="none">On Sat, Feb 23, 2019 at 2:16 AM Battmain via Shop-talk<br clear="none"><<a shape="rect" href="mailto:shop-talk@autox.team.net" rel="nofollow" target="_blank">shop-talk@autox.team.net</a>> wrote:<br clear="none">><br clear="none">> Finally got around to installing an amplified speaker I had sitting around for years. It was supposed to be a simple install, but looks like I fried something in the haste.<br clear="none">><br clear="none">> I already picked up the capacitor in the picture, but I think the regulator might be fried also based on the burn marks.Seems there are different models of that regulator. The amp is in a 12v application. Anybody have any ideas as to what model regulator it is? (or what I could substitute it with? Will be getting it from that auction site. :) )<br clear="none">> Picture in the link...(that's the best I could get) <a shape="rect" href="https://i.imgur.com/FIfJA4O.jpg" rel="nofollow" target="_blank">https://i.imgur.com/FIfJA4O.jpg</a><br clear="none">><br clear="none">> I figure if I throw $5 at it in parts, it wouldn't hurt to try.<br clear="none">><br clear="none">><br clear="none">> Brian</div><br clear="none">> _______________________________________________<br clear="none">><br clear="none">> <a shape="rect" href="mailto:Shop-talk@autox.team.net" rel="nofollow" target="_blank">Shop-talk@autox.team.net</a><br clear="none">> Donate: <a shape="rect" href="http://www.team.net/donate.html" rel="nofollow" target="_blank">http://www.team.net/donate.html</a><br clear="none">> Suggested annual donation $12.96<br clear="none">> Archive: <a shape="rect" href="http://www.team.net/pipermail/shop-talk" rel="nofollow" target="_blank">http://www.team.net/pipermail/shop-talk</a><br clear="none">><br clear="none">> Unsubscribe/Manage: <a shape="rect" href="http://autox.team.net/mailman/options/shop-talk/fishplate@gmail.com" rel="nofollow" target="_blank">http://autox.team.net/mailman/options/shop-talk/fishplate@gmail.com</a><div class="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydpbf13efe9yqt8133710530" id="gmail-m_-5809008202927118149ydp4db1db92yiv6690341354ydpbf13efe9yqtfd59736"><br clear="none">></div></div></div>
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